In a polygamous marriage, another wife of a woman's husband.(noun)
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Use "co-wife" in a sentence
"Evelyn converted to Christianity and became her co-wife."
""In my experience, I would say that most people know the women who they are accusing of witchcraft and it could be a family member, someone who lives in the same community, a co-wife or even a child accusing a parent, aunt or grandmother," said Palmer."
"In all Ruvu groups it looks to have been common for some * mwali to emerge from seclusion prepared to move directly into partnership as a wife or co-wife. 44"