n. The state or practice of having several wives at the same time; plurality of wives; marriage to several wives - H. Spencer
the GNU version of the Collaborative International Dictionary of English
n. The state or practice of having several wives at the same time; marriage to several wives.
The Century Dictionary and Cyclopedia
n. Marriage or cohabitation of one man with more than one woman at the same time; polygamy as practised by the male.
n. Of a male animal, the state of having more than one female mate.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. having more than one wife at a time
Word Usage
"That latter is exceedingly rare, which is why the researchers use the term polygyny and not the often misused polygamy, which refers to multiple partners for both sexes."