·vi To Float; to rise like a buoy.
II. Buoy ·vt To support or sustain; to preserve from sinking into ruin or despondency.
III. Buoy ·vt To keep from sinking in a fluid, as in water or air; to keep afloat;
— with up.
IV. Buoy ·vt To fix buoys to; to mark by a buoy or by buoys; as, to buoy an anchor; to buoy or buoy off a channel.
V. Buoy ·noun A float; ·esp. a floating object moored to the bottom, to mark a channel or to point out the position of something beneath the water, as an anchor, shoal, rock, ·etc.