noun, noun which may take the genitive case particle 'no'
Specifically refers to one husband having multiple wives. The broader term for multiple spouses is 複婚 (ふくこん).
Polygyny has been accepted in some cultures.
一夫多妻制の社会では、男性が複数の妻を持つことが許される。
In a polygynous society, a man is allowed to have multiple wives.