an assembly of persons wearing masks, and amusing themselves with dancing, conversation, or other diversions.-a dramatic performance by actors in masks; a mask. see 1st mask, 4.-acting or living under false pretenses; concealment of something by a false or unreal show; pretentious show; disguise.-a spanish diversion on horseback.-to assemble in masks; to take part in a masquerade.-to frolic or disport in disquise; to make a pretentious show of being what one is not.-to conceal with masks; to disguise.