From Longman Dictionary of Contemporary Englishcocked hatˌcocked ˈhat noun [countable] British English 1 → knock/beat somebody/something into a cocked hat2 DCCa hat with the edges turned up on three sides, worn in the past
Examples from the Corpus
cocked hat• Knocked 1968 into a cocked hat.• They knock all other mills into a cocked hat, I assure you.• The tourist trade depends too much on the cocked hat. 