The quality or condition of being vain. Excessive pride in one's appearance or accomplishments; conceit. See Synonyms at conceit. Lack of usefulness, worth, or effect; worthlessness. Something that is vain, futile, or worthless. Something about which one is vain or conceited. A vanity case. See dressing table. A bathroom cabinet that encloses a basin and its water lines and drain, usually furnished with shelves and drawers underneath for storage of toiletries.