锤版

Repoussage \Re*pous`sage"\, n. [F. See {Repouss['e]}.] (Art)
Art or process of hammering out or pressing thin metal from
the reverse side: (1) in producing repouss['e] work; (2) in
leveling up any part of an etched plate that has been worked
so as to cause a depression.
[Webster 1913 Suppl.]