身を隠す (hide oneself / go into hiding)

The set phrase 身を隠す, literally 'to hide one's body,' meaning to go into hiding — disappearing from sight to avoid someone, escape detection, or wait out trouble. Part of a productive set of 身を~ phrases (身を投げる 'throw oneself,' 身を引く 'step aside,' 身を寄せる 'take refuge').