draw boringn.

Brit.

/ˈdrɔː ˌbɔːrɪŋ/, U.S.

/ˈdrɔ ˌbɔrɪŋ/,

/ˈdrɑ ˌbɔrɪŋ/

Origin: Of multiple origins. Partly formed within English, by compounding. Partly formed within English, by derivation. Etymons: draw- comb. form, boring n.¹; drawbore v., -ing suffix¹.

Etymology: Partly < draw- comb. form + boring n.¹, and partly (in sense 2) < drawbore v. + -ing suffix¹. Compare earlier draw borer n.

1. The action or process of enlarging or finishing the inside of a metal cylinder, gun barrel, etc., using a boring tool. Now chiefly historical and rare.

ΚΠ

1805 in Repertory Arts, Manufactures, & Agric. 2nd. Ser. 7 258 I recommend finishing the inside by drawboring, making each stroke lengthways.

1829 ‘R. Stuart’ Anecd. Steam Engines II. xxi. 471 To diminish the expense of boring the cylinders, they were recommended..to be lined with a softer metal, and to be finished by what is technically called draw-boring.

1974 Industr. Diamond Rev. Nov. 409/1 Rings produced in the preceding draw-boring operation in which special high-speed steel reamers are drawn through the barrel after it has been bored by a gun-drilling process.

2003 P. F. Blakeley Successful Shotgunning x. 138 Years ago, all the major gun makers in the United Kingdom would regulate the point of impact and pattern of their shotgun barrels to suit their clients' requirements by means of draw-boring with a lapping machine.

2. Joinery. The action or technique of pinning together the parts of mortise and tenon joint by drilling a hole through the joint and driving a wooden peg into it. Cf. drawbore v.

ΚΠ

1823 P. Nicholson New Pract. Builder iv. 232 The Draw-bore Pin, or Hook-pin [used] for drawboring.

1842 R. Burn Naval & Mil. Techn. Dict. French Lang. 73/1 Enlaçure, bolting a tenon into its mortise, called draw-boring.

1916 I. S. Griffiths Woodwk. for Secondary Schools iv. 184 The purpose of drawboring is to insure the mortised member being pulled up snugly against the shoulders oft he tenoned member.

2016 @w4kpm 14 Apr. in twitter.com (accessed 21 May 2019) Teaching mortise and tenon and draw boring tonight in the hand tool fundamentals class!

This is a new entry (OED Third Edition, June 2022).

单词	draw boring
释义	draw boringn. Brit. /ˈdrɔː ˌbɔːrɪŋ/, U.S. /ˈdrɔ ˌbɔrɪŋ/, /ˈdrɑ ˌbɔrɪŋ/ Origin: Of multiple origins. Partly formed within English, by compounding. Partly formed within English, by derivation. Etymons: draw- comb. form, boring n.¹; drawbore v., -ing suffix¹. Etymology: Partly < draw- comb. form + boring n.¹, and partly (in sense 2) < drawbore v. + -ing suffix¹. Compare earlier draw borer n. 1. The action or process of enlarging or finishing the inside of a metal cylinder, gun barrel, etc., using a boring tool. Now chiefly historical and rare. ΚΠ 1805 in Repertory Arts, Manufactures, & Agric. 2nd. Ser. 7 258 I recommend finishing the inside by drawboring, making each stroke lengthways. 1829 ‘R. Stuart’ Anecd. Steam Engines II. xxi. 471 To diminish the expense of boring the cylinders, they were recommended..to be lined with a softer metal, and to be finished by what is technically called draw-boring. 1974 Industr. Diamond Rev. Nov. 409/1 Rings produced in the preceding draw-boring operation in which special high-speed steel reamers are drawn through the barrel after it has been bored by a gun-drilling process. 2003 P. F. Blakeley Successful Shotgunning x. 138 Years ago, all the major gun makers in the United Kingdom would regulate the point of impact and pattern of their shotgun barrels to suit their clients' requirements by means of draw-boring with a lapping machine. 2. Joinery. The action or technique of pinning together the parts of mortise and tenon joint by drilling a hole through the joint and driving a wooden peg into it. Cf. drawbore v. ΚΠ 1823 P. Nicholson New Pract. Builder iv. 232 The Draw-bore Pin, or Hook-pin [used] for drawboring. 1842 R. Burn Naval & Mil. Techn. Dict. French Lang. 73/1 Enlaçure, bolting a tenon into its mortise, called draw-boring. 1916 I. S. Griffiths Woodwk. for Secondary Schools iv. 184 The purpose of drawboring is to insure the mortised member being pulled up snugly against the shoulders oft he tenoned member. 2016 @w4kpm 14 Apr. in twitter.com (accessed 21 May 2019) Teaching mortise and tenon and draw boring tonight in the hand tool fundamentals class! This is a new entry (OED Third Edition, June 2022). < n.1805
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