Masked /(?)/

Masked

a.
  1. Wearing a mask or masks; characterized by masks; concealed; hidden.
  2. Same as Personate. (Bot.)
  3. Having the anterior part of the head differing decidedly in color from the rest of the plumage; -- said of birds. (Zool.)

Phrases & Compounds
Masked ball
a ball in which the dancers wear masks.
Masked battery
a battery so placed as not to be seen by an enemy until it opens fire.
Masked crab
a European crab (Corystes cassivelaunus) with markings on the carapace somewhat resembling a human face.
Masked pig
a Japanese domestic hog (Sus pliciceps). Its face is deeply furrowed.