Definitions
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.