lochia (n.)youdaoicibaDictYouDict[lochia 词源字典]
"discharge from the uterus after childbirth," 1680s, Modern Latin, from Greek lokhia, neuter plural of lokhios "pertaining to childbirth," from lokhos "a lying in, childbirth," also, "an ambush," from PIE root *legh- "to lie, lay" (see lie (v.2)).[lochia etymology, lochia origin, 英语词源]