car·bun·cle
noun/ˈkɑːbʌŋkl/
/ˈkɑːrbʌŋkl/
- a large painful swelling (= an area that is larger and rounder than normal) under the skin
痈 - a bright red jewel, usually cut into a round shape
红榴石；红宝石；红玉
Word OriginMiddle English (in sense (2)): from Old French charbuncle, from Latin carbunculus ‘small coal’, from carbo ‘coal, charcoal’.