Read Edit View history 癸水 guǐshuǐ menstruation Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 癸水 guǐshuǐ menstruation menstruation; a woman's period. Also called 天癸 tiānguǐ. Edit Delete References Add reference synonym 癸水/癸水 → 天癸/天癸 Edit Delete see 癸/癸 → 癸水/癸水 Edit Delete same_as 天癸/天癸 → 癸水/癸水 Edit Delete