巣食う

すくう【巣食う】

〔巣を造る〕 build a nest; nest; 〔比喩的に〕 haunt 《a place》; hang out 《in [at]…》; have one's den [hangout] 《in [at]…》.

●よこしまな考えが心に巣食う. Evil [Dishonest] thoughts lurk in his heart.

・暴力団が町に巣食っている. A gangster [yakuza] organization is based in the town.

・ネズミが天井に巣食っている. Mice have nested in the ceiling.