stepmother | meaning of stepmother in Longman Dictionary of Contemporary English | LDOCE

From Longman Dictionary of Contemporary EnglishFamilystepmotherstep‧moth‧er /ˈstepmʌðə $ -ər/ ●●○ noun [countable]    SSFFAMILYa woman who is married to your father but who is not your motherExamples from the Corpusstepmother• My future stepmother has a pair on her, no doubt about it.• One of them, Merovech, attempted to outwit his stepmother by marrying Sigibert's widow, Brunhild.• His stepmother told him to hurry up.• Even through the laughter came the whistle of my stepmother.• And that means millions of stepmothers in charge of new families.• They had to explain to their stepmother Rose what Monaghan Day was.