Comedo(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).
Thesaurus Entries
blackhead, blaze, bleb, blemish, blister, blotch, brand, bulla, caste mark, character, check, checkmark, cicatrix, comedo, crack, crater, craze, cut, dapple, defacement, defect, deformation, deformity, discoloration, disfiguration, disfigurement, distortion, dot, earmark, engraving, fault, feature, flaw, fleck, flick, freckle, gash, graving, hack, hemangioma, hickey, jot, keloid, kink, lentigo, macula, mark, marking, milium, mole, mottle, needle scar, nevus, nick, notch, patch, pimple, pit, pock, pockmark, point, polka dot, port-wine mark, port-wine stain, prick, puncture, pustule, rift, scab, scar, scarification, score, scotch, scratch, scratching, sebaceous cyst, speck, speckle, splash, split, splotch, spot, stain, stigma, strawberry mark, sty, tattoo, tattoo mark, tick, tittle, track, trait, travail, twist, verruca, vesicle, wale, warp, wart, watermark, weal, welt, wen, whitehead