初潮

初潮	chū cháo	menarche
初	chū	(bound form) at first; initially / (bound form) first; early / (bound form) (in lunar calendar dates, before numerals 1–10) days 1 to 10 of a month, as in 初三 "the third"
潮	cháo	tide / damp; moist; humid / fashionable; trendy / (coll.) inferior; substandard