id \'id\ n [NL, fr. L, it] (1924) The one of the three divisions of the psyche in psychoanalytic theory that is completely unconscious and is the source of psychic energy derived from instinctual needs and drives P compare EGO, SUPEREGO 2 sets of the following are psonsored as prizes: Commander Keen: Aliens Ate My Baby Sitter Wolfenstein 3D Spear of Destiny The Ultimate DOOM DOOM II Heretic The id WWW site is: www.idsoftware.com. The id ftp site is: ftp.idsoftware.com. The id fsp site is: fsp.idsoftware.com, port 21.