noun
: a punch press having an arch-shaped frame giving greater width at the bolster plate and permitting operations on wider work at the expense of strength and rigidity in the frame
noun
: a punch press having an arch-shaped frame giving greater width at the bolster plate and permitting operations on wider work at the expense of strength and rigidity in the frame
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012