lead plug

lead plug

1. A small cylinder of lead which is forced into a hole in a masonry wall; serves as a point of attachment for a screw or nail driven into it.
2. A piece of lead between adjacent stones, for holding them together; formed by pouring molten lead in a groove cut in the jointing faces.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
He had to poke the lead plug out with a cleaning rod through the barrel to allow the gun to breathe.
Sometimes lead plugs were inserted into weights to make fine adjustments.
To my astonishment the lead plugs were still there in the base and the pins were also in the bottom of both."
Nailing strips (2 by 3's) for the lath facing were fastened to the block wall with lag bolts in lead plugs. Lath was painted white before assembly.