Definition of "co-mother" []

• The relationship of a godmother to the other god-parents, and the legal parents, of a child. (noun)
• In polygamy, a wife of one's father who is not one's mother; that is, co-wife of one's mother (noun)
• In polygamy, the relationship between one co-wife and another, in respect to their children (noun)
• In a lesbian couple, the nonbirth mother (partner of the birth mother) of a child, especially one who takes an equal role in mothering the child (noun)

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• "Marci, my wonderful friend, soul sister, and “book co-mother”—we did it!"
• "And at 17, I became a co-mother, and that made it all come alive again."
• "In the 23rd hour of Tooba's cumulative testimony - exclusive of breaks and overnight recesses - here it is, the nut graph, the crux of the quadruple murder case against Tooba, her husband Mohammad Shafia and their son Hamed, in what the crown alleges was an Afghan honour killing'' of three teenage sisters and their co-mother, their bodies discovered June 30, 2009 in a Nissan Sentra submerged in the Kingston Mills Locks."