That which is vain, futile, or worthless; that which is of no value, use or profit. / Excessive pride in or admiration of one's own abilities, appearance or achievements.

plural of vanity

A phone number as a mnemonic whose letters translate into numbers.

(furniture) a dressing table

(video games) An item in a game that is purely cosmetic, not affecting the player's abilities in any way.

plural of vanity item

cosmetic surgery

plural of vanity surgery

(derogatory) Society, especially high society, as a place of self-interest and the superficial.

Publication through a vanity press.