Ergonovine

noun

1. An ergot alkaloid, C17H23N3O2, used in the form of its maleate, that facilitates uterine muscle contraction and is used primarily after childbirth or abortion to treat or prevent uterine bleeding.
2. Ergometrine.
3. an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortion