BUOY

Definition:

1. [noun] bright-colored; a float attached by rope to the seabed to mark channels in a harbor or underwater hazards
   
   
2. [verb] float on the surface of water
   
   
3. [verb] keep afloat; "The life vest buoyed him up"
   Synonyms: up
   
   
4. [verb] mark with a buoy
   
   

Synonyms:

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Related Words:

• acoustic buoy
• can, can buoy
• conical buoy, nun, nun buoy
• spar buoy