Pronunciation: (sung'kun), [key]
1. having sunk or been sunk beneath the surface; submerged.
2. having settled to a lower level, as walls.
3. situated or lying on a lower level: a sunken living room.
4. hollow; depressed: sunken cheeks.
Obs.a pp. of sink.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.