face mask UK /ˈfeɪs.mɑːsk/US /ˈfeɪs.mæsk/noun 9forms 1 noun9 •A covering used to protect or disguise the face. •A diving mask. •A surgical mask.But it wasn’t the sterile walls of the hospital I expected: no stirrups, no beeping monitors, no scrubbed nurses in face masks. — 1998 •A mask made of common textiles worn over the mouth and nose, such as a bandana, handkerchief, or scarf. •A dust mask. •A respirator. •A facial mask (cosmetic application). •The part of the helmet that directly covers the face, made of one or more plastic-coated metal bars. •The foul of grasping it during play. formsface masks