an elder sister.
(sometimes initial capital letters) a woman who individually or as a member of an organized group undertakes to sponsor or assist a girl in need of help or guidance.
(sometimes initial capital letters) a young woman in the junior or senior class in college who advises a young woman in the freshman class on studies, social activities, etc., often as a part of a sorority program.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use big sister in a sentence
Like its big sister, the new menu item features a crisp filet nestled in a brioche bun, set atop pickle slices.Popeyes’ new fish sandwich is a muted sequel to the chicken sandwich blockbuster of 2019 | Emily Heil | February 12, 2021 | Washington Post
Like its hipper big sister Warsaw, Krakow is a bustling city.
Hutcherson, who considers Lawrence a “great friend” and “big sister,” is disgusted by the incident.Josh Hutcherson on the J. Law Hacking Scandal and Life After 'The Hunger Games' | Marlow Stern | September 11, 2014 | THE DAILY BEAST
In her first memoir, Delia Ephron talks bad hair days, her lack of religion, and losing her big sister Nora.Delia Ephron Talks Her Memoir, ‘Sister, Mother, Husband, Dog’ | Erin Cunningham | September 19, 2013 | THE DAILY BEAST
That Brayden will not get to grow up with his big sister is perhaps what hurts the Engels the most, Merton said.Family of Olivia Engel, Lost in Newtown, Remembers Their Daughter | Matthew DeLuca | December 17, 2012 | THE DAILY BEAST
She has been there ever since in the role of big sister and alter ego.
Little Catherine is his big sister, and a big sister is a little mother; she foresees, she guesses; she has the sacred instinct.Child Life In Town And Country | Anatole France
"Well, you must come if you ever care to," she said, with a big-sister graciousness.Ramsey Milholland | Booth Tarkington
The little girl's big sister put up some pictures on the sloping wooden walls to suit each room.The Library of Work and Play: Housekeeping | Elizabeth Hale Gilman
"Eat her up," said Rosy Posy, who was ecstatically gazing at her beautiful big sister.Marjorie's Busy Days | Carolyn Wells
Little Sister it was called, to distinguish it from an adjoining peak known as big sister.Rescue Dog of the High Pass | James Arthur Kjelgaard