#frat__fraternity  a social club for male undergraduates
  supertype:  guild__club__society__gild__lodge__order  a formal association of people with similar interests; "he joined a golf club"; "they formed a small lunch society"; "men from the fraternal order will staff the soup kitchen today"
  member:  chapter.guild  a local branch of some fraternity or association; "he joined the Atlanta chapter"

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