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

     

    gut

     noun
    noun
    BrE BrE//ɡʌt//
     
    ; NAmE NAmE//ɡʌt//
     
    Brave
     
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  1. 1 [countable] the tube in the body through which food passes when it leaves the stomach synonym intestine
  2. 2guts [plural] the organs in and around the stomach, especially in an animal I'll only cook fish if the guts have been removed.
  3. 3 [countable] (informal) a person’s stomach, especially when it is large synonym belly Have you seen the gut on him! a beer gut (= caused by drinking beer)
  4. 4guts [plural] (informal) the courage and determination that it takes to do something difficult or unpleasant He doesn't have the guts to walk away from a well-paid job. See related entries: Brave
  5. 5[countable, usually plural] the place where your natural feelings that make you react in a particular way are thought to be I had a feeling in my guts that something was wrong.
  6. 6guts [plural] the most important part of something the guts of the problem
  7. 7[uncountable] = catgut
  8. Word Origin Old English guttas (plural), probably related to gēotan ‘pour’.Extra examples I don’t like movies that are full of blood and guts. I had a terrible pain in my guts after eating too many plums. It takes guts to keep on running even though you have blistered feet. She had the guts to stand up to the school bully. I’ll only cook fish if the guts have been removed. It can take up to 72 hours for food to pass through the gut.Idioms
    bust a gut (doing something/to do something)
     
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    (informal) to make a great effort to do something It’s a problem which nobody is going to bust a gut trying to solve.
    (British English, informal) used to refer to somebody who eats too much Make sure greedy guts doesn’t eat all the cake. See related entries: Healthy eating habits, Selfish (informal) to dislike somebody very much
    have somebody’s guts for garters
     
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    (British English, informal) to be very angry with somebody and punish them severely for something they have done She’ll have your guts for garters if she ever finds out.
    slog/sweat/work your guts out
     
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    (informal) to work very hard to achieve something I slogged my guts out for the exam.
    spill your guts (to somebody)
     
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    (North American English, informal) to tell somebody everything you know or feel about something, because you are upset He has spilled his guts in his new autobiography.
See the Oxford Advanced American Dictionary entry: gut