Definitionen
1.NounThe act of perforating or the state of being perforated.
2.NounAny opening in a solid object.
3.NounAn abnormal opening in an organ, such as a rupture.
4.NounA series of holes punched through something in order to assist in separating parts.
5.NounThat portion of a surface that remains after an open disk is removed from it.