mask
     n 1: a covering to disguise or conceal the face
     2: activity that tries to conceal something; "no mask could
        conceal his ignorance"; "they moved in under a mask of
        friendship"
     3: a party of guests wearing costumes and masks [syn: {masquerade},
         {masque}]
     4: a protective covering worn over the face
     v 1: hide under a false appearance; "He masked his
          disappointment" [syn: {dissemble}, {cloak}]
     2: put a mask on or cover with a mask; "Mask the children for
        Halloween" [ant: {unmask}]
     3: cover with a sauce; "mask the meat"
     4: shield from light [syn: {block out}]