1. the bowels or entrails, esp of an animal
⇒ The entire carcass - hide, guts, and bones - was devoured., ⇒ By the time they finish, the crewmen are standing ankle-deep in fish guts.
2. informal courage, willpower, or daring; forcefulness
⇒ It takes guts to stand up to her., ⇒ The new Chancellor has the guts to push through unpopular tax increases., ⇒ It takes more guts than I've usually got to go and see him.
3. informal the essential part
⇒ the guts of the problem, ⇒ She has a reputation for getting at the guts of a subject and never pulling her punches., ⇒ The guts of the reactor have to be hauled out of the pressure vessel.
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