Also found in: Dictionary, Thesaurus, Medical.
1. A temporary internal support for a light-gauge metal shell during a pile-driving operation; takes the impact of the pile hammer during driving and is then withdrawn before concrete is placed in the shell; also called a pile core. 2. A cylindrical bar or spindle, used chiefly as a support during machining or forming operations.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.