'Corrugation' definitions:

Definition of 'corrugation'

From: WordNet
noun
A ridge on a corrugated surface
noun
The act of shaping into parallel ridges and grooves

Definition of 'Corrugation'

From: GCIDE
  • Corrugation \Cor`ru*ga"tion\ (k?r`r?-g?"sh?n), n. [Cf. F. corrugation.] The act corrugating; contraction into wrinkles or alternate ridges and grooves. [1913 Webster]