mask
noun(mask)
a party of guests wearing costumes and masks
mask
verb(mask)
shield from light
Synonyms: block out, 
mask
verb(mask)
hide under a false appearance
Examples:
He masked his disappointment. 
mask
verb(mask)
make unrecognizable
Examples:
The herb masks the garlic taste. 
mask
noun(mask)
a covering to disguise or conceal the face
mask
noun(mask)
activity that tries to conceal something
Examples:
No mask could conceal his ignorance. 
They moved in under a mask of friendship. 
mask
noun(mask)
a protective covering worn over the face
mask
verb(mask)
cover with a sauce
Examples:
Mask the meat. 
mask
verb(mask)
put a mask on or cover with a mask