jackknife

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

1. a large knife with one or more folding blades
• Syn:
clasp knife
• Hypernyms:
pocketknife, pocket knife
2. a dive in which the diver bends to touch the ankles before straightening out
• Hypernyms:
dive, diving

II - verb

dive into the water bending the body at the waist at a right angle, like a jackknife
• Topics:
sport, athletics
• Hypernyms:
dive
• Verb Frames:
- Somebody ----s
- Somebody ----s PP