A painful localized bacterial infection of the skin and subcutaneous tissue that usually has several openings through which pus is discharged.
A deep-red garnet, unfaceted and convex.
Obsolete A red precious stone.
[Middle English, from Old French, from Latin carbunculus, small glowing ember, carbuncle, diminutive of carbō, carbōn-, coal; see ker-3 in Indo-European roots.] car'bun'cled adj., car·bun'cu·lar (-kyə-lər) adj.