Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See blackhead.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a blackhead

from the GNU version of the Collaborative International Dictionary of English

  • n. 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).

from The Century Dictionary and Cyclopedia

  • n. A small, worm-like, black-tipped mass, such as may sometimes be squeezed out of the sebaceous follicles of the face.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a black-tipped plug clogging a pore of the skin

Etymologies

Latin comedō, glutton (from a comparison of the worm-like shape of the waxy material that can be squeezed from a blackhead to a worm believed to feed on the body), from comedere, to eat up : com-, intensive pref.; see com- + edere, to eat.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin comedō ("glutton"). (Wiktionary)

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