ground
ground, 2
1. A nailing strip fixed in a masonry or concrete wall as a means of attaching wood trim or furring strips; also called a common ground, rough ground, fixing, fixing fillet, fixing slip.
2. A plaster ground.
3. The side of an electric circuit connected to the earth, used as a common return.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.