1) Bleed 2) Flow 3) Hemorrhage 4) Shed blood 5) Undergo menstruation 
• (v. i.) To discharge the menses; to have the catamenial flow. • (a.) Menstruous.
The cyclic, physiologic discharge of blood and mucosal tissues through the vagina from the non-pregnant uterus. It is under hormonal control and recurs at approximately 4 week intervals.
To undergo menstruation. ... Origin: L. Menstruo, pp. -atus, to be menstruant ... (05 Mar 2000) ... 
Men'stru·ate adjective Menstruous. [ Obsolete]
Type: Term Pronunciation: men′strū-āt Definitions: 1. To undergo menstruation.
[v] - undergo menstruation