Definitions for jackknifeˈdʒækˌnaɪf
Random House Webster's College Dictionary
jack•knifeˈdʒækˌnaɪf(n.)(pl.)-knives
(n.)a large pocketknife.
a dive in which the diver bends in midair to touch the toes, keeping the legs straight, and then straightens out.
Category: Sport
(v.i.)to bend over from or at the middle; double over like a jackknife.
Category: Common Vocabulary
(of a trailer truck) to have the cab and trailer swivel at the linkage until they form aVshape, as the result of an abrupt stop or accident.
Category: Common Vocabulary, Transportation
(in diving) to perform a jackknife.
Category: Common Vocabulary, Sport
(v.t.)to cause to jackknife.
Category: Common Vocabulary
to cut with a jackknife.
Category: Common Vocabulary
Origin of jackknife:
1705–15, Amer.
Princeton's WordNet
clasp knife, jackknife(noun)
a large knife with one or more folding blades
jackknife(verb)
a dive in which the diver bends to touch the ankles before straightening out
jackknife(verb)
dive into the water bending the body at the waist at a right angle, like a jackknife
Wiktionary
jackknife(Noun)
A resampling method that applies estimators to all subsamples that each omit a single different group (possibly of a single datapoint) of the original sample to provide a sample distribution of the estimate.
Webster Dictionary
Jackknife(noun)
a large, strong clasp knife for the pocket; a pocket knife
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