blank cheque - definition and synonyms

noun [countable] 

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singularblank cheque
pluralblank cheques
  1. 1
    a cheque that has been signed but does not have an amount of money written on it, so that it can be exchanged for whatever amount is entered
  2. 2
    mainly journalism complete freedom and authority to spend as much money as you want on something. This is usually used when you do not think this should happen.