|Origin:||masque, from Old Italian maschera|
something that covers all or part of your face, to protect or to hide it:
a surgical face mask
He was attacked and robbed by two people wearing masks.
something that covers your face, and has another face painted on it, which is used for ceremonies or special occasions:
a Halloween mask
3 [usually singular]
an expression or way of behaving that hides your real emotions or character [= front]:
Her sarcasm is a mask for her insecurity.
a substance that you put on your face and leave there for a short time to clean the skin or make it softer [= face pack]:
a facial mask