blank cheque

Từ điển Oxford Advanced Learner 8th

ˌblank ˈcheque [blank cheque] BrE NAmE (BrE) (NAmE ˌblank ˈcheck) noun
1. a cheque that is signed but which does not have the amount of money to be paid written on it
2. permission or authority to do sth that is necessary in a particular situation
•The President was given a blank check by Congress to continue the war.