noun
: a stamp perforation made by a machine that punches at one stroke the vertical perforations between the stamps in a single row across a sheet and the horizontal perforations at the top of this row
noun
: a stamp perforation made by a machine that punches at one stroke the vertical perforations between the stamps in a single row across a sheet and the horizontal perforations at the top of this row
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012