Synonyms for jackknife
- 1. clasp knife, jackknife, pocketknife, pocket knife
- usage: a large knife with one or more folding blades
- 2. jackknife, dive, diving
- usage: a dive in which the diver bends to touch the ankles before straightening out
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- 1. jackknife, dive
- usage: dive into the water bending the body at the waist at a right angle, like a jackknife