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corrugate verb

  /ˈkɒɹ.ʊˌɡeɪt/ , /ˈkɔɹ.əˌɡeɪt/
  • To fold into parallel folds, grooves or ridges.
riffeln, wellen
  • (transitive) To wrinkle (the skin).
runzeln, schrumpeln, verschrumpeln

corrugated adjective

  • Marked with parallel folds, ridges or furrows.
Well-, gewellt
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