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Pronunciation: (bOO'ē, boi), [key]
1. Naut.a distinctively shaped and marked float, sometimes carrying a signal or signals, anchored to mark a channel, anchorage, navigational hazard, etc., or to provide a mooring place away from the shore.
2. a life buoy.

1. to keep afloat or support by or as if by a life buoy; keep from sinking (often fol. by up): The life jacket buoyed her up until help arrived.
2. Naut.to mark with a buoy or buoys.
3. to sustain or encourage (often fol. by up): Her courage was buoyed by the doctor's assurances.

to float or rise by reason of lightness.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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