#sorority  a social club for female 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:  #sister.member  a female person who is a fellow member of a sorority or labor union or other group; "none of her sisters would betray her"

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