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1. The molding or trim on the inside face of a door or window frame against which the door or window closes; a bead, 2.
2. The projecting boss or other ornament against which the termination of a molding abuts.
3. A button, or the like, which serves to lock a latch bolt in the position in which it is set.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.