password
1. [A] Protected/private alphanumeric string used to authenticate an identity or to authorize access to data. [INFOSEC-99]
2. In data communications, a word, character, or combination thereof, that permits access to otherwise inaccessible data, information, or facilities.
3. A character string used for authentication [CESG].
4. Confidential authentication information, usually composed of a string of characters [7498-2].
5. A private character string that is used to authenticate an identity [TCSEC] [POSIX.6].