masked

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Wearing a mask.
2. adj. Disguised or concealed as if by a mask: masked emotions.
3. adj. Latent or hidden, as a symptom or disease.
4. adj. Botany Personate.
5. adj. Zoology Having masklike markings on the head or face.
6. adj. Zoology Having the anatomy of the next developmental form outlined beneath the integument, as in certain insect pupae.

Century Dictionary and Cyclopedia

1. Having the face covered with a mask; disguised or concealed.
2. Bewildered; amazed.
3. In zoology: Larvate or larval: thus, a caterpillar is the masked state of a butterfly.
4. In entomology, applied to pupæ which have the wings, legs, etc., of the future imago indicated by lines on the surface, as in Lepidoptera.
5. Marked on the head or face as if literally wearing a mask; capistrate; personate.
6. In botany, same as personate.
7. In pathology, same as larval, 2.

Wiktionary

1. v. Simple past tense and past participle of mask.
2. adj. Wearing a mask or masks; characterized by masks; concealed; hidden.
3. adj. botany personate
4. adj. zoology Having the anterior part of the head differing decidedly in color from the rest of the plumage; -- said of birds.

GNU Webster's 1913

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

WordNet 3.0

1. adj. having its true character concealed with the intent of misleading
2. adj. having markings suggestive of a mask