mattoir
noun
mat·toir
\(ˈ)ma‧¦twȧr\
Definition of mattoir
-s
: a coarse punch used by engravers for making a rough surface on etching ground or on the naked copper to produce an effect after printing that is very similar to stippled lines
From the M-W Editors
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Origin and Etymology of mattoir
French matoir, from mater to cause to have a surface without luster, mat — more at mat
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