n. An assembly of persons wearing masks, and amusing themselves with dancing, conversation, or other diversions.n. A dramatic performance by actors in masks; a mask. See 1st Mask, 4.n. Acting or living under false pretenses; concealment of something by a false or unreal show; pretentious show; disguise.n. A Spanish diversion on horseback.verb-intransitive. To assemble in masks; to take part in a masquerade.verb-intransitive. To frolic or disport in disquise; to make a pretentious show of being what one is not.v. To conceal with masks; to disguise.