Godan verb with 'u' ending, Intransitive verb
to build a nest; to nest
嫉妬心くらい強く人間の心情に巣食う情熱はない。There is not a passion so strongly rooted in the human heart as envy. to hang out (of a bad group); to be based (in); to haunt
to lodge (in one's mind; of an evil thought, delusion, etc.); to be planted; to luck (in one's heart)
Also written 巣くう【すくう】