Definition of corrugated adjective from the Oxford Advanced American Dictionary

 

corrugated

 adjective
adjective
NAmE//ˈkɔrəˌɡeɪt̮əd//
 
, NAmE//ˈkɑrəˌɡeɪt̮əd//
 
 
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shaped into a series of regular folds that look like waves a corrugated metal roof corrugated cardboard
See the Oxford Advanced Learner's Dictionary entry: corrugated