Pronunciation: (fru-tûr'ni-tē),[key] —n., —pl.-ties. 1. a local or national organization of male students, primarily for social purposes, usually with secret initiation and rites and a name composed of two or three Greek letters.
2. a group of persons associated by or as if by ties of brotherhood.
3. any group or class of persons having common purposes, interests, etc.: the medical fraternity. 4. an organization of laymen for religious or charitable purposes; sodality.
5. the quality of being brotherly; brotherhood: liberty, equality, and fraternity. 6. the relation of a brother or between brothers.