co-husband

plural co-husbands

1. In a polyandrous marriage, another husband of a man’s wife.

   The village chief Sambhu, upheld Mahesh’s claim to half of Damodar’s wealth since he was his co-husband

   2004, Govindraraj Sulekha, The Co-husband

   1 more example

   When younger brother calls [his elder brother's wife] his "co-wife" and reciprocally, when she calls him "co-husband," rights in sexuality are being satirized.

   1997, David Lipset, Mangrove man: dialogics of culture in the Sepik estuary, page 72

   Synonyms: husband-in-law, brother-husband