babymotherEnglishOxford New American Dictionarybabymother /ˈbābēˌməT͟Hər, ˈbeɪbiˌməðər / ▸ noun the mother of one or more of a man’s children, who is not his wife or current partner: I knew his babymother, Miss Richards, as we went to school and grew up together. – ORIGIN 1960s : from baby + mother, after babyfather; originally in Caribbean English.