[ego] n, pl egos [NL, fr. L, I--more at i] (1789) 1: the self esp. as contrasted with another self or the world
2. a: egotism
2. b: self-esteem 1
3: the one of the three divisions of the psyche in psychoanalytic theory that serves as the organized conscious mediator between the person and reality esp. by functioning both in the perception of and adaptation to reality--compare id, superego -- ego.less adj