Menstruate

глагол [физиология] менструировать

Большой англо-русский словарь

Menstruate

intransitive verb (-ated; -ating) Etymology: Late Latin menstruatus, past participle of menstruari, from Latin menstrua menses, from neuter plural of menstruus monthly, from mensis to undergo menstruation

Merriam-Webster's Collegiate Dictionary