Emmenagogue

from WordNet (r) 3.0 (2006)

emmenagogue
    n 1: any agent that promotes menstrual discharge

from The Collaborative International Dictionary of English v.0.48

Emmenagogue \Em*men"a*gogue\, n. [Gr. ?, n. pl., menses (? in +
   ? month) + ? leading, fr. ? to lead: cf. F. emm['e]nagogue.]
   (Med.)
   A medicine that promotes the menstrual discharge.
   [1913 Webster] Emmenthal
   Emmentaler
   Emmental