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verb [ I ] uk / ˈdʒæk.naɪf / us / ˈdʒæk.naɪf /. Add to word list. If a truck that has two parts jackknifes, one part moves around so far towards the other part that it cannot be driven: The oil tanker jackknifed after skidding on the ice.
noun. /ˈdʒæknaɪf/ (plural jackknives. /ˈdʒæknaɪvz/ ) a large knife with a blade (= cutting edge) that folds into the handle. Questions about grammar and vocabulary? Find the answers with Practical English Usage online, your indispensable guide to problems in English. See jackknife in the Oxford Advanced American Dictionary.
Definitions of 'jackknife' 1. a knife with the blade pivoted to fold into a recess in the handle. [...] 2. a former name for a type of dive in which the diver bends at the waist in midair, with the legs straight and the hands touching the feet, finally straightening out and entering the water headfirst; forward pike dive. [...] 3.
jackknife. (dʒæknaɪf ) Word forms: jackknifes, jackknifing, jackknifed. intransitive verb. If a truck that is in two parts jackknifes, the back part swings around at a sharp angle to the front part in an uncontrolled way as the truck is moving.
A complete guide to the word "JACKKNIFE": definitions, pronunciations, synonyms, grammar insights, collocations, examples, and translations.
JACK-KNIFE definition: 1. a knife with a blade that can be folded away into the handle 2. If a large truck jack-knifes…. Learn more.
The meaning of JACKKNIFE is a large strong pocketknife. How to use jackknife in a sentence.
