1. A beam made of structural metal units (such as plates and angles) which are riveted, bolted, or welded together.
2. A beam of precast concrete units which are joined by shear connectors.
3. A flitch beam.
4. A timber made up of several pieces fastened together, forming one of larger dimensions.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.