层子

层子	céng zi	stratum
层	céng	to pile on top of one another / layer; stratum / floor (of a building); story / (math.) sheaf / classifier for layers
子	zǐ	son / child / seed / egg / small thing / 1st earthly branch: 11 p.m.-1 a.m., midnight, 11th solar month (7th December to 5th January), year of the rat / viscount, fourth of five orders of nobility 五等爵位 / ancient Chinese compass point: 0° (north) / subsidiary; subordinate; (prefix) sub-
子	zi	(noun suffix)