lathing board

lathing board

[′lath·iŋ ‚bȯrd]
(building construction)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

backup strip

A piece of wood at the corner of a ceiling and side wall; serves as the mounting for the ends of the gypsum-board panels.

backup strip, lathing board

A wood strip which is fixed at the corner of a partition or wall to provide a nailing surface for ends of lath.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.