Also found in: Dictionary, Idioms.

STEP-MOTHER. In Latin noverca, is the wife of one's father, who is not the mother of the person spoken of.

References in classic literature ?
Courted by my step-mother, who regards him as the epitome of human wisdom; admired by my father, who says he has never before heard such sublime ideas so eloquently expressed; idolized by Edward, who, notwithstanding his fear of the count's large black eyes, runs to meet him the moment he arrives, and opens his hand, in which he is sure to find some delightful present, -- M.
He meets Albert de Morcerf in Italy -- it is to rescue him from the hands of the banditti; he introduces himself to Madame Danglars -- it is that he may give her a royal present; your step-mother and her son pass before his door -- it is that his Nubian may save them from destruction.
He will come in that day and He will ask: 'Where is the daughter who gave herself for her cross, consumptive step-mother and for the little children of another?
RATODERO -- A son killed his step-mother and a man over alleged illicity relations here in the wee hours of Saturday.
Goetz; his mother, Elissa Hayes; step-mother, Marilyn Goetz; stepbrother, Ryon Hennessy; stepsisters, Carrie Pedote and Shannon Ebner; as well as 16 nieces and nephews and many beloved cousins.
Beloved wife of Gilbert and much-missed step-mother of Matthew, Madeleine and the late Daniel Gauntlett.
He said that Investigation Incharge Homicide of PS Factory Area arrested a killer namely Naseer Ahmad involved in a murder of his step-mother Mukhtaran Bibi over domestic issue.
The music icon's oldest daughter Alexa Ray Joel, who he welcomed with ex-wife Christie Brinkley, was in the delivery room to support her step-mother as she gave birth.
Her father is dead and her step-mother, Lucy, ranges from neglectful to outright cruel.
Agents contacted the teenagers step-mother and she verified that her step-daughter had been kidnapped from their home in Illinois on July 19 and had filed a missing persons report in Cumberland County with the Toledo Sheriffs Office.
Suddenly at home on 20th February 2016, aged 50 years, Sue (nee Brown), dearly loved wife of David, loving mother of the late Alexander and Annie, cherished only daughter of Colin and Anne, sister of David, John, Peter, Martin and Stephen, also a much loved step-mother of Kelly, Stuart, Lauren and Adam and an adored gran and auntie.
EMMERDALE (ITV, 7pm) AARON is convinced that his step-mother Sandra is his only hope, but he can't track her down.