guts

(noun) fortitude and determination. Synonyms: backbone, grit, moxie, sand, gumption. Example: "He didn't have the guts to try it."

(noun) the part of the alimentary canal between the stomach and the anus. Synonyms: intestine, bowel, gut.

(noun) a narrow channel or strait. Synonyms: gut.

(noun) a strong cord made from the intestines of sheep and used in surgery. Synonyms: catgut, gut.

(verb) empty completely; destroy the inside of. Synonyms: gut. Example: "Gut the building."

(verb) remove the guts of. Synonyms: gut. Example: "Gut the sheep."