Foul Bite. An anomaly of acid etching; cut into metal where it is not wanted; also called false bite. See acid etching. By extension, the same term is used in engraving dies handcut for a slip of the burin, cutting into the surface of a die where it was unintended.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor