Definition of jackknife Jackknife
jack•knife
We found 8 definitions of jackknife from 4 different sources.
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What does jackknife mean?
WordNet
NounPlural: jackknives |
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| jackknife - a dive in which the diver bends to touch the ankles before straightening out | ||
| diving, dive an athletic competition that involves diving into water | ||
| jackknife - a large knife with one or more folding blades | ||
| clasp knife | ||
Verb |
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| jackknife - dive into the water bending the body at the waist at a right angle, like a jackknife | ||
| dive swim under water; "the children enjoyed diving and looking for shells" | ||
| athletics, sport participation in sports events as an extracurricular activity | ||
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Wiktionary 
- jackknife (Noun)
Alternative spelling of jack-knife. - 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. - jackknife (Verb)
Alternative spelling of jack-knife.
Webster DictionaryWebster's Unabridged Dictionary 📘
- jackknife (n.)
A large, strong clasp knife for the pocket; a pocket knife.
Part of speech
🔤- jackknife, verb, present, 1st person singular of jackknife (infinitive).
- jackknife, verb (infinitive).
- jackknife, noun, singular of jackknives.
