Buoy, v. t. [imp. & p. p.Buoyed (�); p. pr. & vb. n.Buoying.] 1. To keep from sinking in a fluid, as in water or air; to keep afloat; — with up.
2. To support or sustain; to preserve from sinking into ruin or despondency.
Those old prejudices, which buoy up the ponderous mass of his nobility, wealth, and title.
Burke.
3. To fix buoys to; to mark by a buoy or by buoys; as, to buoy an anchor; to buoy or buoy off a channel.
Not one rock near the surface was discovered which was not buoyed by this floating weed.
Darwin.