blowbackn.adj.

Brit.

/ˈbləʊbak/, U.S.

/ˈbloʊˌbæk/

Origin: Formed within English, by compounding. Etymons: blow- comb. form, back adv.; blow v.¹, back adv.

Etymology: As noun < blow- comb. form + back adv. As adjective probably < blow v.¹ + back adv.

A. n.

a. The (typically unwanted) expansion or movement of gas, smoke, etc., in a direction opposite to the intended one, especially through leakage of pressure or delayed combustion (as in a boiler, furnace, engine, etc.); (also) an instance of this.

1873 Engineer 5 Sept. 158/3 Valves, or the like, are used for preventing the blow back, and for other purposes.

1929 Evening News 18 Nov. 14/3 He received his injuries as the result of a blow-back in one of the boilers when pulverised fuel was being lit.

1936 Amer. Home Feb. 56/2 Occasionally a blow-back of smoke is experienced when a fire is first lighted.

1996 Chesapeake Bay Mag. Sept. 64/2 The most common source of fuel spills is blowback from tank vents while fueling up [a boat].

2017 P. Rez Simple Physics of Energy Use ix. 135 There is a potential loss [of thermal efficiency in internal combustion engines] of another 5% from badly fitting piston rings and exhaust blowback.

b. Firearms. The unwanted escape of gas in a rearward direction during the firing of a weapon, caused by defects or dirt in the weapon or its ammunition and resulting in a misfire or a reduction in the projectile velocity; (also) an instance of this. Now chiefly historical.

1892 Ann. Rep. Chief of Ordnance to Secretary of War (U.S.) 285 The primers also, in the proportion of about 3 to every 4 shots, had come out, causing a blow back of gas in the face of the operator.

1905 Kynoch Jrnl. Jan.–Mar. 10 The cracks..will at once develop into fissures when the cartridge is fired, cause ‘blow-backs’, and seriously reduce the velocity of the projectile.

1996 O. Coetzer Road to Infamy xxviii. 253 Dum-Dum bullets were to be Britain's main source of ammunition for the war. But the issue was stopped and the bullets recalled when it was found that inexperienced riflemen had been subjected to blow-backs when the rifle barrels were found to be dirty.

2. figurative. Adverse consequences or repercussions of a political situation, action, or decision, especially when unforeseen; also as a count noun.Quot. 1905 shows use of A. 1 as a modifier in a figurative context.

ΘΠ

the world > existence and causation > causation > effect, result, or consequence > [noun] > undesired or unintended consequence(s) or side-effect

repercussion1603

aftermath1671

ill effect1675

mal-effect1686

side effect1814

wrack1844

implication1873

backwash1876

katzenjammer1897

backlash1921

kickback1935

spillover1940

fallout1954

rub-off1962

booby prize1972

own goal1975

1905 Sunday Light (San Antonio, Texas) 27 Aug. 1/5 The boomerang nature of the new German tariff law continues to be shown... Protests..are being made in all parts of the empire against its ‘Blow-back’ proclivities.]

1963 J. Cameron in Harper's Bazaar (U.K. ed.) July 79/1 Few people in British public life ever say anything that could risk a blowback.

1988 C. Simpson Blowback i. 5 This impact is what is known in spy jargon as ‘blowback’, meaning unexpected—and negative—effects at home that result from covert operations overseas.

2011 Independent 24 Jan. (Viewspaper section) 13/5 The immediate blowback from the country's casting aside of natural processes becomes most plain when you look at its dams.

B. adj.

Firearms. Designating a design or system of operation of self-loading guns that uses the force of motion of the spent cartridge case pushed rearward by gas from the ignited gunpowder (or other propellant); (also) of or relating to such a system of operation.

1915 C. A. Nelson U.S. Patent 1,165,621 2/1 A gun of the blow-back type including, with a cartridge-chamber-forming structure having its chamber open rearwardly, a chamber-closing element movable rearwardly in response to explosion-pressure to open said chamber.

1945 C. E. Balleisen Princ. Firearms v. 40 If higher loads are to be handled, it is preferable to use a locked action, or at least to provide some sort of delaying action to reduce the motion of the bolt. This latter type is called delayed blowback action.

2013 A. Gibbons Raining Fire i. 7 Now, let's take a look at the gun. This is a blowback design.

This entry has been updated (OED Third Edition, December 2022).

> as lemmas

blow-back n.

Brit.

/ˈbləʊbak/

U.S.

/ˈbloʊˌbæk/

the act or process of blowing back; spec. (a) the back-pressure in a boiler or internal-combustion engine; (b) in firearms (cf. blow v.¹ 24e).

ΚΠ

1883 J. D. Fulton Sam Hobart, Locomotive Engineer 224 The flames originated from the ‘blow back’ on the engine.

1899 Westm. Gaz. 13 July 7/2 Foul barrels were the cause of ineffectual shots and ‘blow-back’ caps.

1905 Kynoch Jrnl. Jan.–Mar. 10 The cracks..will at once develop into fissures when the cartridge is fired, cause ‘blow-backs’, and seriously reduce the velocity of the projectile.

1907 Daily Chron. 22 July 7/1 His cartridge being a defective one—what is called a ‘blow back’.

1929 Evening News 18 Nov. 14/3 He received his injuries as the result of a blow-back in one of the boilers when pulverised fuel was being lit.

1940 Chambers's Techn. Dict. 98/2 Blow back, the return, at low speeds, of some of the induced mixture through the carburettor of a petrol-engine; due to late closing of the inlet valve during compression.

blow-back n.

Brit.

/ˈbləʊbak/

U.S.

/ˈbloʊˌbæk/

figurative (chiefly U.S.) the adverse consequences of a (political) situation or action (in quot. blow- comb. form as part of an extended metaphor).

ΚΠ

1968 Times 25 Nov. 8/3 It will not help Mr Jenkins much if he tries to explain himself by going into all the relevant intricacies of demand management, and the blowback on sterling from the mark's exhaust.

1988 C. Simpson Blowback i. 5 This impact is what is known in spy jargon as ‘blowback’, meaning unexpected—and negative—effects at home that result from covert operations overseas.

1993 Coloradoan (Fort Collins) 11 July e4/5 The trouble we're having now is blowback off the Afghan War.

2000 Nation (N.Y.) 20 Nov. 22/2 Twenty years after Washington armed the mujahedeen to drive the Soviet Union out of Afghanistan, Russia must now protect the West from the blowback of that policy.

单词	blowback
释义	blowbackn.adj. Brit. /ˈbləʊbak/, U.S. /ˈbloʊˌbæk/ Origin: Formed within English, by compounding. Etymons: blow- comb. form, back adv.; blow v.¹, back adv. Etymology: As noun < blow- comb. form + back adv. As adjective probably < blow v.¹ + back adv. A. n. 1. a. The (typically unwanted) expansion or movement of gas, smoke, etc., in a direction opposite to the intended one, especially through leakage of pressure or delayed combustion (as in a boiler, furnace, engine, etc.); (also) an instance of this. Π 1873 Engineer 5 Sept. 158/3 Valves, or the like, are used for preventing the blow back, and for other purposes. 1929 Evening News 18 Nov. 14/3 He received his injuries as the result of a blow-back in one of the boilers when pulverised fuel was being lit. 1936 Amer. Home Feb. 56/2 Occasionally a blow-back of smoke is experienced when a fire is first lighted. 1996 Chesapeake Bay Mag. Sept. 64/2 The most common source of fuel spills is blowback from tank vents while fueling up [a boat]. 2017 P. Rez Simple Physics of Energy Use ix. 135 There is a potential loss [of thermal efficiency in internal combustion engines] of another 5% from badly fitting piston rings and exhaust blowback. b. Firearms. The unwanted escape of gas in a rearward direction during the firing of a weapon, caused by defects or dirt in the weapon or its ammunition and resulting in a misfire or a reduction in the projectile velocity; (also) an instance of this. Now chiefly historical. Π 1892 Ann. Rep. Chief of Ordnance to Secretary of War (U.S.) 285 The primers also, in the proportion of about 3 to every 4 shots, had come out, causing a blow back of gas in the face of the operator. 1905 Kynoch Jrnl. Jan.–Mar. 10 The cracks..will at once develop into fissures when the cartridge is fired, cause ‘blow-backs’, and seriously reduce the velocity of the projectile. 1996 O. Coetzer Road to Infamy xxviii. 253 Dum-Dum bullets were to be Britain's main source of ammunition for the war. But the issue was stopped and the bullets recalled when it was found that inexperienced riflemen had been subjected to blow-backs when the rifle barrels were found to be dirty. 2. figurative. Adverse consequences or repercussions of a political situation, action, or decision, especially when unforeseen; also as a count noun.Quot. 1905 shows use of A. 1 as a modifier in a figurative context. ΘΠ the world > existence and causation > causation > effect, result, or consequence > [noun] > undesired or unintended consequence(s) or side-effect repercussion1603 aftermath1671 ill effect1675 mal-effect1686 side effect1814 wrack1844 implication1873 backwash1876 katzenjammer1897 backlash1921 kickback1935 spillover1940 fallout1954 rub-off1962 booby prize1972 own goal1975 1905 Sunday Light (San Antonio, Texas) 27 Aug. 1/5 The boomerang nature of the new German tariff law continues to be shown... Protests..are being made in all parts of the empire against its ‘Blow-back’ proclivities.] 1963 J. Cameron in Harper's Bazaar (U.K. ed.) July 79/1 Few people in British public life ever say anything that could risk a blowback. 1988 C. Simpson Blowback i. 5 This impact is what is known in spy jargon as ‘blowback’, meaning unexpected—and negative—effects at home that result from covert operations overseas. 2011 Independent 24 Jan. (Viewspaper section) 13/5 The immediate blowback from the country's casting aside of natural processes becomes most plain when you look at its dams. B. adj. Firearms. Designating a design or system of operation of self-loading guns that uses the force of motion of the spent cartridge case pushed rearward by gas from the ignited gunpowder (or other propellant); (also) of or relating to such a system of operation. Π 1915 C. A. Nelson U.S. Patent 1,165,621 2/1 A gun of the blow-back type including, with a cartridge-chamber-forming structure having its chamber open rearwardly, a chamber-closing element movable rearwardly in response to explosion-pressure to open said chamber. 1945 C. E. Balleisen Princ. Firearms v. 40 If higher loads are to be handled, it is preferable to use a locked action, or at least to provide some sort of delaying action to reduce the motion of the bolt. This latter type is called delayed blowback action. 2013 A. Gibbons Raining Fire i. 7 Now, let's take a look at the gun. This is a blowback design. This entry has been updated (OED Third Edition, December 2022). > as lemmas blow-back blow-back n. Brit. /ˈbləʊbak/ , U.S. /ˈbloʊˌbæk/ the act or process of blowing back; spec. (a) the back-pressure in a boiler or internal-combustion engine; (b) in firearms (cf. blow v.¹ 24e). ΚΠ 1883 J. D. Fulton Sam Hobart, Locomotive Engineer 224 The flames originated from the ‘blow back’ on the engine. 1899 Westm. Gaz. 13 July 7/2 Foul barrels were the cause of ineffectual shots and ‘blow-back’ caps. 1905 Kynoch Jrnl. Jan.–Mar. 10 The cracks..will at once develop into fissures when the cartridge is fired, cause ‘blow-backs’, and seriously reduce the velocity of the projectile. 1907 Daily Chron. 22 July 7/1 His cartridge being a defective one—what is called a ‘blow back’. 1929 Evening News 18 Nov. 14/3 He received his injuries as the result of a blow-back in one of the boilers when pulverised fuel was being lit. 1940 Chambers's Techn. Dict. 98/2 Blow back, the return, at low speeds, of some of the induced mixture through the carburettor of a petrol-engine; due to late closing of the inlet valve during compression. extracted from blow-comb. form blow-back blow-back n. Brit. /ˈbləʊbak/ , U.S. /ˈbloʊˌbæk/ figurative (chiefly U.S.) the adverse consequences of a (political) situation or action (in quot. blow- comb. form as part of an extended metaphor). ΚΠ 1968 Times 25 Nov. 8/3 It will not help Mr Jenkins much if he tries to explain himself by going into all the relevant intricacies of demand management, and the blowback on sterling from the mark's exhaust. 1988 C. Simpson Blowback i. 5 This impact is what is known in spy jargon as ‘blowback’, meaning unexpected—and negative—effects at home that result from covert operations overseas. 1993 Coloradoan (Fort Collins) 11 July e4/5 The trouble we're having now is blowback off the Afghan War. 2000 Nation (N.Y.) 20 Nov. 22/2 Twenty years after Washington armed the mujahedeen to drive the Soviet Union out of Afghanistan, Russia must now protect the West from the blowback of that policy. extracted from blow-comb. form < n.adj.1873 as lemmas
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