肛塞

肛塞	gāng sāi	butt plug
肛	gāng	used in 脱肛
肛	gāng	(bound form) anus; rectum
塞	sāi	to plug; to stop up; to stuff in / (bound form) a stopper; a cork
塞	sài	(bound form) strategic stronghold
塞	sè	(bound form) to block; to obstruct