ETYM Latin carbunculus a little coal, a bright kind of precious stone, a kind of tumor, dim. of carbo coal: cf. French carboncle. Related to Carbon.
In medicine, a collection of boils forming an abscess, caused by bacterial infection. It is usually treated with antibiotics.architectural monstrosity or eyesore; red precious stone.
Large boil; garnet cut en cabochon.
An infection larger than a boil and with several openings for discharge of pus.