jackknife

Noun · Verb
Synonyms: clasp knife

WordNet 3.0

Noun (2)

  1. a large knife with one or more folding bladesSynonyms: clasp knife
  2. a dive in which the diver bends to touch the ankles before straightening out

Verb (1)

  1. dive into the water bending the body at the waist at a right angle, like a jackknife
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Webster's Dictionary (GCIDE)

Jackknife \Jack"knife`\, n. A large, strong clasp knife for the pocket; a pocket knife. [1913 Webster]
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