noun
: one of a set of cutting dies whose matrix is a little smaller at the bottom than at the cutting edge so that the edge of the work forced through the die becomes burnished
noun
: one of a set of cutting dies whose matrix is a little smaller at the bottom than at the cutting edge so that the edge of the work forced through the die becomes burnished
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012