From Longman Dictionary of Contemporary Englishblank chequeˌblank ˈcheque British English, blank check American English noun [countable] 1 BFBa cheque that has been signed, but has not had the amount written on it2 → give somebody a blank cheque
Examples from the Corpus
blank cheque• He was effectively granted a blank cheque to conduct a war without Congressional authorization for up to 90 days.• There will be no blank cheque for missile defence.• And here ... sign this blank cheque for what you owe.From Longman Business Dictionaryblank chequeˌblank ˈcheque British English, blank check American EnglishBANKING a cheque that has been signed, but where no amount has been written in → cheque 