Polygamy

Webster's Dictionary of the English Language

·noun The state or habit of having more than one mate.

II. Polygamy ·noun The condition or state of a plant which bears both perfect and unisexual flowers.

III. Polygamy ·noun The having of a plurality of wives or husbands at the same time; usually, the marriage of a man to more than one woman, or the practice of having several wives, at the same time;

— opposed to monogamy; as, the nations of the East practiced polygamy. ·see the Note under Bigamy, and ·cf. Polyandry.