perforations

plural of perforation

(countable, uncountable) The act of perforating or the state of being perforated.
(countable, uncountable) Any opening in a solid object.
(countable, uncountable) An abnormal opening in an organ, such as a rupture.
(countable, uncountable) A series of holes punched through something in order to assist in separating parts.
(countable, uncountable) That portion of a surface that remains after an open disk is removed from it.