Slang expression for dioceses in the vicinity of the Great Lakes that were once considered to be characterized by Anglo-catholic practices. The term is derived from the traditional fondness of some Anglo-catholic clergy for wearing birettas. Use of this hat was considered by some to be an emblem of Anglo-catholicism. The term is dated and imprecise because few dioceses in this region are now characterized by distinctive Anglo-catholic practice. It is also misleading because Anglo-catholicism cannot be equated with use of a biretta. See Biretta.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from "An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians," Don S. Armentrout and Robert Boak Slocum, editors.