Definition of carbuncle noun from the Oxford Advanced Learner's Dictionary

     

    carbuncle

     noun
    noun
    BrE BrE//ˈkɑːbʌŋkl//
     
    ; NAmE NAmE//ˈkɑːrbʌŋkl//
     
     
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  1. 1a large painful swelling under the skin
  2. 2 a bright red jewel, usually cut into a round shape
  3. Word Origin Middle English (in sense (2)): from Old French charbuncle, from Latin carbunculus ‘small coal’, from carbo ‘coal, charcoal’.
See the Oxford Advanced American Dictionary entry: carbuncle