(n.) A strong, buoyant boat especially designed for saving the lives of shipwrecked people.

Mae West air-sea rescue bolt-hole breeches buoy buoy coast guard cork jacket ejection capsule ejection seat ejector seat emergency exit escape hatch fire escape inflatable slide life belt life buoy life jacket life net life preserver life raft life ring life vest lifeguard lifeline lifesaver parachute rescuer rubber dinghy safety belt sally port savior slide water wings