chapterhouse

Noun

chapter house (plural chapter houses)

1. A building attached to a cathedral, church, or monastery and used as a meeting place.
   • The cloister, and the chapter-house adjoining to the church, are the finest here of any I have seen in England; the latter is octagon, or eight-square, and is 150 feet in its circumference.1724, Daniel Defoe, Journey from London to the Land's End
2. A building used by a sorority or fraternity as a residence or meeting place.
   • At the house-party herein represented a murder is done, and the locale of the deed is a chapter house on the pleasant campus at Williamston, Mass.1929 September 23, “New Plays in Manhattan”, in Time

   Synonyms:

   Greek house