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A pier that has several engaged shafts against its surface, used often in Romanesque and Gothic structures.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
compound pier, compound pillar
A pier composed of a conjunction of colonettes, generally attached to a central shaft; a clustered column. Also see bundle pier.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.