The act of perforating or the state of being perforated.
That portion of a surface that remains after an open disk is removed from it.
A series of holes punched through something in order to assist in separating parts.
An abnormal opening in an organ, such as a rupture.
Any opening in a solid object.
A perforating artery or vein
A machine that can bore a tunnel underground
A tool or machine that makes holes, or perforates, materials such as paper and card.