Английский разговорный словарь (основной) - corrugate
Corrugate
corrugate
ˈkɔruɡeɪt v. 1 tr. (esp. as corrugated adj.) formintoalternate ridges and grooves, esp. to strengthen (corrugated iron; corrugated paper). 2 tr. & intr. contract into wrinkles or folds. øøcorrugation n. [L corrugare (as COM-, rugare f. ruga wrinkle)]