Disguises (5)
'disguises' is the definition.
(masking is a kind of disguising)
This is the entire clue.
(Other definitions for masks that I've seen before include "Hides, disguises" , "Coverings to conceal the face" .)
'disguises' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for veils that I've seen before include "Obscures" , "See 20" , "Garments to cover head and face" , "Covers or partly conceals - bride's face?" , "coverage" .)