'Jackknife' definitions:

Definition of 'jackknife'

From: WordNet
noun
A large knife with one or more folding blades [syn: clasp knife, jackknife]
noun
A dive in which the diver bends to touch the ankles before straightening out
verb
Dive into the water bending the body at the waist at a right angle, like a jackknife

Definition of 'Jackknife'

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

Words containing 'Jackknife'