maskmask /mæsk/ noun 
► mask
► mask something that covers and hides all or part of your face: The bank robbers were wearing masks, so we could not see their faces. The boy had a Halloween mask on his face to make him look like a vampire.
► disguise something you wear to change your appearance and hide who you really are: He wore a fake beard as a disguise. The poor woman in the market was actually the queen in disguise.
► camouflage fur, skin, or feathers that make an animal difficult to see because the colors look like the natural background: The polar bear's white fur is an excellent camouflage in the snow. ➔ Camouflage is also the patterns on military equipment or on soldiers' clothing that make them more difficult to see: The soldiers were dressed in camouflage and were carrying weapons.
SYNONYM CHECKMask or disguise?If you wear a disguise, you try to look different so that people will not recognize you.If you wear a mask, people cannot recognize you or see what you look like because your face is covered.