(~s, menstruating, ~d)
When a woman ~s, a flow of blood comes from her womb. Women ~ once a month unless they are pregnant or have reached the menopause. (FORMAL)
Lean hard-training women athletes may ~ less frequently or not at all.
VERB: V
menstruation
Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.
N-UNCOUNT