lactifuge: any agent that reduces milk secretion (as given to a woman who is not breast feeding)
agent: a substance that exerts some force or effect
monocotyledones: comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae