menstruation

باللغة العربية: حَيْض، طَمْث، الدورة الشهرية

1. The periodic discharging of the menses, the flow of blood and cells from the lining of the uterus in unfertilized females of humans and other primates. (countable, uncountable)
2. An instance of menstruation, the part of each month during which a fertile woman menstruates. (countable, uncountable)

الجمع menstruations