Example: “I’m going to lunch with my Big and then I’m going to go shopping with my Little.”

Definition: big/little sibling

Explanation: In Sororities and Fraternities, “big” refers to someone older than you that acts as your mentor. Similarly, if you have a “little”, you act as that persons mentor. Sororities and Fraternities almost exclusively use the phrases big/little without the sister or brother after it.