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The thin edge of a gravel-surfaced road.
A wood tool with a level edge used to straighten angles in the finish coat of plaster.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
An edge of a surface, surface coating, or surface film, which tapers away in fineness.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.