car ‧ bun ‧ cle /ˈkɑːbʌŋk ə l $ ˈkɑːr-/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Old French ; Origin: Latin carbunculus 'small piece of burning coal' , from carbo ; ⇨ ↑ carbon ]
1 . a large painful lump under someone’s skin
2 . a red jewel, especially a ↑ garnet