/ˈdʒækˌnaɪvz/
NOUN
Large folding knives with one or more blades that pivot into the handle, allowing them to be folded and carried compactly.
Used to refer to folding knives carried for practical cutting tasks, outdoor activities, camping, or general utility purposes.
NOUN
Dives in which the diver bends forward at the waist, bringing the upper body toward the legs before straightening out for entry into the water.
Used to describe pike-style diving movements in which the diver folds the body at the hips while keeping the legs straight, then extends the body before entering the water.