Definition of corrugate in English:

corrugate

Syllabification: cor·ru·gate
Pronunciation: /ˈkôrəˌɡāt, ˈkär-
 
/

verb

Contract or cause to contract into wrinkles or folds: [no object]: Micky’s brow corrugated in a simian frown
More example sentences
  • The deep bays that corrugate St Lucia's coastlines were the cause of 150 years of conflict between the French and the English, who both desired the island for its natural harbours and strategic position in the Caribbean Sea.

Origin

late Middle English: from Latin corrugat- 'wrinkled', from the verb corrugare, from cor- (expressing intensive force) + rugare (from ruga 'a wrinkle').

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence