jackknife

[ jak-nahyf ]

/ ˈdʒækˌnaɪf /

SEE SYNONYMS FOR jackknife ON THESAURUS.COM

noun, plural jack·knives.

a large pocketknife.

Fancy Diving. a dive in which the diver bends in midair to touch the toes, keeping the legs straight, and then straightens out.

verb (used without object), jack·knifed, jack·knif·ing.

to bend or double over like a jackknife: The prizefighter jackknifed and fell when he was hit in the stomach.

(of a trailer truck) to have the cab and trailer swivel at the linkage until they form a V shape, as the result of an abrupt stop or accident.

(in diving) to perform a jackknife.

to move rapidly at an abrupt angle.

verb (used with object), jack·knifed, jack·knif·ing.

to cause to jackknife: The blow jackknifed the prizefighter.

to cut with a jackknife.

adjective

resembling a jackknife, as in its shape, function, or manner of opening and folding.

Origin of jackknife

1705–15, Americanism;jack¹ (cf. jockteleg) + knife

Words nearby jackknife

jack-in-office, jack-in-the-box, jack-in-the-green, jack-in-the-pulpit, Jack Ketch, jackknife, jackknife-fish, jack ladder, jackleg, jacklight, jacklighter

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for jackknife

"Wimmen are kind by natur," said the sailor, shutting his jackknife with a jerk, the only sign of impatience yet visible.
Silent Struggles|Ann S. Stephens
Them natives'll give ye a silver fox fer a jackknife an' a barrel o' flour, an' a marten fer a gallon o' molasses.
Ungava Bob|Dillon Wallace
Them are his trousers I've on me and he gave me an oilskin and that jackknife.
Ulysses|James Joyce
And pray who shall search the vitals of a whale with a bodkin—who may reach his jackknife through the superposed bubber?
The Fiend's Delight|Dod Grile

The knees of Elliot doubled up under him like the blade of a jackknife.
The Yukon Trail|William MacLeod Raine

British Dictionary definitions for jackknife

jackknife

/ (ˈdʒækˌnaɪf) /

noun plural -knives

a knife with the blade pivoted to fold into a recess in the handle

a former name for a type of dive in which the diver bends at the waist in midair, with his legs straight and his hands touching his feet, finally straightening out and entering the water headfirst: forward pike dive

verb (intr)

(of an articulated lorry) to go out of control in such a way that the trailer swings round at an angle to the cab

to make a jackknife dive

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

单词	jackknife
释义	jackknife [ jak-nahyf ] / ˈdʒækˌnaɪf / SEE SYNONYMS FOR jackknife ON THESAURUS.COM noun, plural jack·knives. a large pocketknife. Fancy Diving. a dive in which the diver bends in midair to touch the toes, keeping the legs straight, and then straightens out. verb (used without object), jack·knifed, jack·knif·ing. to bend or double over like a jackknife: The prizefighter jackknifed and fell when he was hit in the stomach. (of a trailer truck) to have the cab and trailer swivel at the linkage until they form a V shape, as the result of an abrupt stop or accident. (in diving) to perform a jackknife. to move rapidly at an abrupt angle. verb (used with object), jack·knifed, jack·knif·ing. to cause to jackknife: The blow jackknifed the prizefighter. to cut with a jackknife. adjective resembling a jackknife, as in its shape, function, or manner of opening and folding. Origin of jackknife 1705–15, Americanism;jack¹ (cf. jockteleg) + knife Words nearby jackknife jack-in-office, jack-in-the-box, jack-in-the-green, jack-in-the-pulpit, Jack Ketch, jackknife, jackknife-fish, jack ladder, jackleg, jacklight, jacklighter Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for jackknife "Wimmen are kind by natur," said the sailor, shutting his jackknife with a jerk, the only sign of impatience yet visible. Silent Struggles\|Ann S. Stephens Them natives'll give ye a silver fox fer a jackknife an' a barrel o' flour, an' a marten fer a gallon o' molasses. Ungava Bob\|Dillon Wallace Them are his trousers I've on me and he gave me an oilskin and that jackknife. Ulysses\|James Joyce And pray who shall search the vitals of a whale with a bodkin—who may reach his jackknife through the superposed bubber? The Fiend's Delight\|Dod Grile The knees of Elliot doubled up under him like the blade of a jackknife. The Yukon Trail\|William MacLeod Raine British Dictionary definitions for jackknife jackknife / (ˈdʒækˌnaɪf) / noun plural -knives a knife with the blade pivoted to fold into a recess in the handle a former name for a type of dive in which the diver bends at the waist in midair, with his legs straight and his hands touching his feet, finally straightening out and entering the water headfirst: forward pike dive verb (intr) (of an articulated lorry) to go out of control in such a way that the trailer swings round at an angle to the cab to make a jackknife dive Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to jackknife plunge, cannonball, gainer, swallow dive
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jackknife

noun, plural jack·knives.

verb (used without object), jack·knifed, jack·knif·ing.

verb (used with object), jack·knifed, jack·knif·ing.

adjective

Origin of jackknife

Words nearby jackknife

Example sentences from the Web for jackknife

British Dictionary definitions for jackknife

noun plural -knives

verb (intr)

Words related to jackknife