chapter house

Ecclesiastical. a building attached to or a hall forming part of a cathedral or monastery, used as a meeting place for the chapter.

a building used by a chapter of a society, fraternity, sorority, etc.

Origin of chapter house

before 1150; Middle English chapitelhus, Old English captelhus

The Chapter-House was a victim to Wyatt's misdoings, and the greater part was pulled down by him.

The Cathedrals of Great Britain |P. H. Ditchfield
Their only common room was the chapter-house, where they met for the transaction of business.

Somerset |G.W. Wade and J.H. Wade
For the rest of the Decorated glass we must go to the chapter-house and the vestibule which leads thereto.

Stained Glass Tours in England |Charles Hitchcock Sherrill
The Chapter-House is connected with the eastern aisle of the transept by a vestibule projecting three bays beyond the north front.

The Cathedral Church of York |A. Clutton-Brock

The doorway opening into the vestibule of the chapter-house is in the east walk.

Bell's Cathedrals: The Cathedral Church of Lincoln |A. F. Kendrick