Carbuncle

Noun

 * 1)  A deep-red or fiery colored garnet or other dark red precious stone, especially when cut cabochon.
 * 2) An abscess larger than a boil, usually with one or more openings draining pus onto the skin. It is usually caused by bacterial infection.

Thesaurus
abscess, aposteme, bed sore, blain, bleb, blister, boil, bubo, bulla, bump, bunion, canker, canker sore, chancre, chancroid, chilblain, cold sore, corn, cyst, dilatation, dilation, distension, edema, eschar, felon, fester, festering, fever blister, fistula, furuncle, furunculus, gathering, gumboil, hemorrhoids, intumescence, kibe, lesion, lump, papula, papule, paronychia, parulis, petechia, piles, pimple, pock, polyp, pustule, rising, scab, sebaceous cyst, soft chancre, sore, stigma, sty, suppuration, swell, swelling, swollenness, tubercle, tumefaction, tumescence, tumidity, tumor, turgescence, turgescency, turgidity, ulcer, ulceration, wale, welt, wen, wheal, whelk, whitlow, wound