1. A word or pronunciation that distinguishes people of one group or class from those of another. 2a. A word or phrase identified with a particular group or cause; a catchword. b. A commonplace saying or idea. 3. A custom or practice that betrays one as an outsider.
ETYMOLOGY:
Ultimately from Hebrew ibblet, torrent of water, from the use of this word to distinguish one tribe from another that pronounced it sibblet (Judges 12:46).