RhymeZone: buoy definitions

Definitions of buoy:

noun: bright-colored; a float attached by rope to the seabed to mark channels in a harbor or underwater hazards
verb: mark with a buoy
verb: keep afloat
Example: "The life vest buoyed him up"
verb: float on the surface of water
name: A surname (very rare: popularity rank in the U.S.: #38477)