Meaning of “gut” - Learner’s Dictionary

gut

verb [ T ] uk us /ɡʌt/ (present participle gutting, past tense and past participle gutted)
ANIMAL

to remove the organs from inside a fish or other animal

BUILDING

to completely destroy or remove the inside of a building:

A fire gutted the bookshop last week.

(Definition of “gut verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)