ˈgrōziŋ- noun
Etymology: part translation of Dutch gruisijzer, from gruizen (dial. groezen ) to crush, trim glass (from gruis gravel, fragments, from Middle Dutch gruus ) + yzer iron; akin to Middle Low German grūs, grōs crushed stone, gravel, Old English grēot grit — more at grit (sand)
archaic : a steel tool for cutting glass