Found 1 items, similar to jackknives.
English → English (WordNet) Definition: jackknives jackknives See jackknife jackknife n 1: a large knife with one or more folding blades [syn: clasp knife ] 2: a dive in which the diver bends to touch the ankles before straightening out v : dive into the water bending the body at the waist at a right angle, like a jackknife [also: jackknives (pl)]