step·moth·er
noun/ˈstepmʌðə(r)/
/ˈstepmʌðər/
(British English, informal stepmum, North American English, informal stepmom)
- a woman who is the wife or partner of your father but who is not your birth mother
您父亲的妻子或伴侣但不是您的生母的女性 Word OriginOld English stēopmōdor (see step-, mother).