Pronunciation: (u-pēk'), [key] Naut.
1. more or less vertical.
2. (of a dropped anchor) as nearly vertical as possible without being free of the bottom.
3. (of an anchored vessel) having the anchor cable as nearly vertical as possible without freeing the anchor.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.