天癸 Save Sign in to save words tiānguǐ ㄊㄧㄢ ㄍㄨㄟˇ menstruation TCM period Character by character 天(tiān)day 癸(guǐ)tenth of the ten Heavenly Stems 十天干 shítiāngān A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0