menses

About 0.66 uses per million words.

Meaning

1. noun The discharge of blood and cellular tissue that flows from the inner lining of the uterus out through the vagina, occurring typically once a month in uninseminated women; a menstrual flow.

Similar words

menstruation catamenia flow period rules periods menstrual period menstrual fluid flood menstruum

Often followed by

and are in is or were have may too