Keywords: menstruation, period (menstruation), menstruate
As a Noun
1. The period of time each month during which a fertile woman loses blood from her womb. English = menstruation, period.
As a Verb or Adjective
1. 2. To lose blood from your womb for a period of time each month as part of a natural cycle associated with sexual fertility. English = menstruate, have your periods.