MASK (2)

Mask, v. t. [imp. & p. p. Masked (?); p. pr. & vb. n. Masking.] 1. 1. To cover, as the face, by way of concealment or defense against injury; to conceal with a mask or visor.
They must all be masked and vizarded. Shak. 2. 2. To disguise; to cover; to hide.
Masking the business from the common eye. Shak. 3. 3. (Mil.) (a) To conceal; also, to intervene in the line of. (b) To cover or keep in check; as, to mask a body of troops or a fortress by a superior force, while some hostile evolution is being carried out.