1) Building 2) Edifice 3) Frat building 
In church architecture, a building in which the canonical chapter of a monastery, cathedral, or collegiate church meets for the discussion of its affairs. It is often elaborately designed and...
[n] - a building attached to a monastery or cathedral 2. [n] - a house used as a residence by a chapter of a fraternity
fraternity house noun a house used as a residence by a chapter of a fraternity
In church architecture, a building in which the canonical chapter of a monastery, cathedral, or collegiate church meets for the discussion of its affairs. It is often elaborately designed and ornamented, and usually polygonal, or octagonal, as at Lichfield and York. The position of the chapterhouse is usually to the west of the transepts of the chu...