noun

1. A cover, or partial cover, for the face, used for disguise or protection.

   “a dancer's mask; a fencer's mask; a ball player's mask”

2. That which disguises; a pretext or subterfuge.

3. A festive entertainment of dancing or other diversions, where all wear masks; a masquerade

Synonyms: mascaron, vizard

verb

1. To cover (the face or something else), in order to conceal the identity or protect against injury; to cover with a mask or visor.

2. To disguise; to cover; to hide.

3. To conceal; also, to intervene in the line of.