life belt

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. belt attaching you to some object as a restraint in order to prevent you from getting hurt
• Syn:
safety belt, safety harness
• Hypernyms:
belt, restraint, constraint
• Hyponyms:
seat belt, seatbelt
2. a life preserver in the form of a ring of buoyant material
• Syn:
life buoy, lifesaver, life ring
• Hypernyms:
life preserver, preserver, flotation device
• Hyponyms:
breeches buoy