资料来源 : pyDict

一夫多妻

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Polygyny \Po*lyg"y*ny\, n. [Poly- + Gr. ? woman, wife.]
   The state or practice of having several wives at the same
   time; marriage to several wives. --H. Spenser.

资料来源 : WordNet®

polygyny
     n : having more than one wife at a time