Pronunciation: (vang'kwish, van'-), [key]
1. to conquer or subdue by superior force, as in battle.
2. to defeat in any contest or conflict; be victorious over: to vanquish one's opponent in an argument.
3. to overcome or overpower: He vanquished all his fears.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.