In building forms, any lumber or boards used for shaping and holding green concrete until it has set and thoroughly dried.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
form board, form liner, form lumber
A board or a sheet of wood used in formwork.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.