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.
early 13c., "that which is vain, futile, or worthless," from O.Fr. vanite, from L. vanitatem (nom. vanitas) "emptiness, foolish pride," from vanus "empty, vain, idle" (see vain). Meaning "self-conceited" is attested from mid-14c. Vanity table is attested from 1936. Vanity Fair