Definitions for "Fraternities"
Men's fraternal and social organizations, often identified by Greek letters, such as Zeta Beta Tau. There are also professional and scholastic fraternities open to men and women, such as Beta Alpha Psi, the national fraternity for students of accounting.
Social and philanthropic organizations found on many U.S. campuses, usually male-only (see "Sororities").
A men's student organization formed for social and/or philanthropic purposes found on many university and college campuses.