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.