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We found 31 dictionaries with English definitions that include the word jackknife: Click on the first link on a line below to go directly to a page where "jackknife" is defined. General (25 matching dictionaries) jackknife: American Heritage Dictionary of the English Language [home, info] jackknife: Collins English Dictionary [home, info] jackknife: Vocabulary.com [home, info] jackknife: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Jackknife, jackknife: Wordnik [home, info] Jackknife: Wiktionary [home, info] jackknife: Compact Oxford English Dictionary [home, info] jackknife: Webster's New World College Dictionary, 4th Ed. [home, info] jackknife: The Wordsmyth English Dictionary-Thesaurus [home, info] jackknife: Infoplease Dictionary [home, info] Jackknife, jackknife: Dictionary.com [home, info] jackknife: UltraLingua English Dictionary [home, info] jackknife: Cambridge Dictionary of American English [home, info] Jackknife (statistics), Jackknife (truck tractor and trailer), Jackknife: Wikipedia, the Free Encyclopedia [home, info] Jackknife: Online Plain Text English Dictionary [home, info] jackknife: Webster's Revised Unabridged, 1913 Edition [home, info] jackknife: Rhymezone [home, info] Jackknife: AllWords.com Multi-Lingual Dictionary [home, info] jackknife: Free Dictionary [home, info] jackknife: Mnemonic Dictionary [home, info] jackknife: WordNet 1.7 Vocabulary Helper [home, info] jackknife: LookWAYup Translating Dictionary/Thesaurus [home, info] jackknife: Dictionary/thesaurus [home, info] Business (1 matching dictionary) Jackknife: Glossary of Trucking Terms [home, info] Computing (1 matching dictionary) jackknife: Encyclopedia [home, info] Science (2 matching dictionaries) Jackknife: Eric Weisstein's World of Mathematics [home, info] Jackknife: GLOSSARY OF ORDINATION-RELATED TERMS [home, info] Slang (1 matching dictionary) jackknife: Urban Dictionary [home, info] Sports (1 matching dictionary) jackknife: Extreme Martial Arts Glosary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (jackknife) ▸ noun:  a dive in which the diver bends to touch the ankles before straightening out ▸ noun:  a large knife with one or more folding blades ▸ verb:  dive into the water bending the body at the waist at a right angle, like a jackknife