perforation
Concise Oxford English Dictionary © 2008 Oxford University Press:
perforation /ˌpəːfəˈreɪʃn/
▶noun a hole made by boring or piercing.
■ a small hole or row of small holes punched in a sheet of paper.
■ the action or state of perforating or being perforated.
'perforation' also found in these Oxford entries:
