The Collaborative International Dictionary of English v.0.48:
Monogynous \Mo*nog"y*nous\, a. [Cf. F. monogyne.] (Bot.) Of or pertaining to Monogynia; having only one style or stigma. [1913 Webster]WordNet (r) 3.0 (2006):
monogynous adj 1: having one head or chief wife at a time (along with concubines) [syn: monogynous, monogynic]