Wiktionary
alt. A buoyant inflatable ring carried onboard ships which can be thrown to someone in the water in an emergency to keep themselves afloat. n. A buoyant inflatable ring carried onboard ships which can be thrown to someone in the water in an emergency to keep themselves afloat.
WordNet
n. belt attaching you to some object as a restraint in order to prevent you from getting hurt [syn: safety belt, safety harness]
a life preserver in the form of a ring of buoyant material [syn: life buoy, lifesaver, life ring]
Usage examples of "life belt".
It consists of a broad belt, not unlike the life belt used aboard passenger ships on Earth.
They consist of a broad belt, not unlike the life belt used aboard trans-oceanic liners upon Earth.
One life belt will support two people if they don't try to stand on it or fight the water.
Two canisters and one life belt apiece, we'll make better time that way.
The spectacle of a man acting with assurance, was a life belt thrown to her at a moment when she had forgotten the hope of its existence.
Fortunately I had my life belt and I pelted for the cave mighty fast.