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open cheque UK US UK (US open check) noun [C] FINANCE
► (also blank cheque) BANKING a cheque which has been signed, but does not have the amount of money written on it
► (also an open cheque book) a situation in which there are no limits to the amount of money given to a person, project, etc.: »
The new manager was given an open cheque to sign new players.
Financial and business terms. 2012.