Pronunciation: (pas'wûrd", päs'-), [key]
1. a secret word or expression used by authorized persons to prove their right to access, information, etc.
2. a word or other string of characters, sometimes kept secret or confidential, that must be supplied by a user in order to gain full or partial access to a multiuser computer system or its data resources. Cf. countersign.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.