n.; pl. egos [ L., I. ] The conscious and permanent subject of all psychical experiences, whether held to be directly known or the product of reflective thought; the subject consciously considered as “I” by a person; -- opposed to non-ego. [ 1913 Webster +PJC ]

2. (Psychoanalysis) that one of the three parts of a person's psychic apparatus that mediates consciously between the drives of the id and the realities of the external physical and social environment, by integrating perceptions of the external world and organizing the reactions to it. Contrasted with the id and superego. [ PJC ]

3. egotism; as, a job requiring a diplomat without too much ego. [ PJC ]

4. self-esteem; as, he has an overinflated ego. [ PJC ]

adj. having an attitude which is almost exclusively concerned with one's own needs or desires.
Syn. -- egoistical, self-centered, self-centred. [ WordNet 1.5 ]

n. a self-centered person with little regard for others.
Syn. -- egoist. [ WordNet 1.5 ]

n. the personality trait that causes one to attempt to get personal recognition for oneself (especially by unacceptable means).
Syn. -- egoism, self-interest, self-concern, self-centeredness. [ WordNet 1.5 ]

a. Pertaining to egoism. [ R. ] [ 1913 Webster ]

n. [ F. égoïsme, fr. L. -ego I. See I, and cf. Egotism. ] 1. (Philos.) The doctrine of certain extreme adherents or disciples of Descartes and Johann Gottlieb Fichte, which finds all the elements of knowledge in the ego and the relations which it implies or provides for. [ 1913 Webster ]

2. Excessive love and thought of self; the habit of regarding one's self as the center of every interest; selfishness; -- opposed to altruism. [ 1913 Webster ]

n. [ F. égoïste. See Egoism. ] 1. One given overmuch to egoism or thoughts of self. [ 1913 Webster ]

I, dullard egoist, taking no special recognition of such nobleness. Carlyle. [ 1913 Webster ]

2. (Philos.) A believer in egoism.

{ } a. Pertaining to egoism; imbued with egoism or excessive thoughts of self; self-loving. [ 1913 Webster ]

Ill-natured feeling, or egoistic pleasure in making men miserable. G. Eliot. [ 1913 Webster ]

adv. In an egoistic manner. [ 1913 Webster ]

n. Personality. [ R. ] Swift. [ 1913 Webster ]