'Comedo' definitions:

Definition of 'comedo'

(from WordNet)
noun
A black-tipped plug clogging a pore of the skin [syn: blackhead, comedo]

Definition of 'Comedo'

From: GCIDE
  • Comedo \Com"e*do\, n.; pl. Comedones. [L., a glutton. See Comestible.] (Med.) A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt). [1913 Webster]