fra·ter·ni·ty (fr-tûrn-t) n. pl. fra·ter·ni·ties 1. A body of people associated for a common purpose or interest, such as a guild. 2. A group of people joined by similar backgrounds, occupations, interests, or tastes. 3. A chiefly social organization of men students at a college or university, usually designated by Greek letters. 4. The quality […]