Definition of Buoy

a float in water that is used to mark something

Examples of Buoy in a sentence

To alert boaters of the hazard ahead, a small buoy was used to mark the sandbar near the surface.  🔊

You can be a human buoy, floating in the water by wearing your life jacket.  🔊

A wave sensor inside the buoy measures the wave height, direction, and wave period.  🔊

Buoys in the ocean mark the end of the safety zone, and if people swim past them, they will be likely to be dragged out to sea.  🔊

When the submerged pickup truck was found, a round, orange buoy marked the spot.  🔊

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