—n. 1. excessive pride in one's appearance, qualities, abilities, achievements, etc.; character or quality of being vain; conceit: Failure to be elected was a great blow to his vanity. 2. an instance or display of this quality or feeling.
3. something about which one is vain.
4. lack of real value; hollowness; worthlessness: the vanity of a selfish life. 5. something worthless, trivial, or pointless.
6. See vanity case. 7. See dressing table. 8. a wide, counterlike shelf containing a wash basin, as in the bathroom of a hotel or residence, often equipped with shelves, drawers, etc., underneath.
9. a cabinet built below or around a bathroom sink, primarily to hide exposed pipes.
10. compact1 (def. 13).
—adj. 1. produced as a showcase for one's own talents, esp. as a writer, actor, singer, or composer: a vanity production. 2. of, pertaining to, or issued by a vanity press: a spate of vanity books.