jackknife
noun
1. a large knife with one or more folding blades
Definition categories: man–made, pocketknife
2. a dive in which the diver bends to touch the ankles before straightening out
1. a large knife with one or more folding blades
Definition categories: man–made, pocketknife
2. a dive in which the diver bends to touch the ankles before straightening out