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1. The curved portion of the string or handrail which follows a turn in a geometrical stair, usually a quarter circle, and therefore corresponds to a portion of the surface of a vertical cylinder; also called a wreath piece.
2. A twisted band, garland, or chaplet, representing flowers, fruits, leaves, etc.; often used in decoration.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.