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perforator

hullemaskin

perforate verb

  /ˈpəːfəreɪt/
  • (transitive) To pierce; to penetrate.
  • (transitive) To make a line of holes in (a thin material) to allow separation at the line.
 perforere

perforation noun

  /ˌpəːfəˈreɪʃən/ , /ˌpɚfəˈreɪʃən/
  • Any opening in a solid object.
 perforering