mask
/ˈmæsk/ /Brit ˈmɑːsk/
noun
plural masks
[count] a covering for your face or for part of your face: such as
a covering used to hide or disguise your face
a covering used to protect your face or cover your mouth
a way of appearing or behaving that is not true or real - usually singular
verb
masks; masked; masking
[+ obj] to hide (something) from sight
to keep (something) from being known or noticed