Certain facial blemish

• Dermal blemish
• A black-tipped plug clogging a pore of the skin

Wiktionary Word definitions in Wiktionary
n. a blackhead

Wikipedia Word definitions in Wikipedia
A comedo is a clogged hair follicle (pore) in the skin. Keratin (skin debris) combines with oil to block the follicle. A comedo can be open ( blackhead ) or closed by skin ( whitehead ), and occur with or without acne . The word comedo comes from the Latin ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"blackhead," etc., 1866, from Latin comedo "glutton," from comedere "to eat up" (see comestible ). A name formerly given to worms that devour the body; transferred in medical use to secretions that resemble them.

WordNet Word definitions in WordNet
n. a black-tipped plug clogging a pore of the skin [syn: blackhead ] [also: comedones (pl)]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
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).