a blank check meaning

• [American slang]
  freedom or permission to act as one wishes or thinks necessary.
    He's been given a blank check with regard to reorganizing the work force.
    The new manager has been given no detailed instructions about how to train the staff. He just has a blank check.

• blank check:    Noun: blank check& ...
• blank check preferred stock:    [Finance]This is s ...
• blank-check company:    [Finance]A company ...

Examples

1. he will give you a blank check to deal with the problem.
2. he handed me a blank check
3. it is like a blank check on the bank of heaven, isn't it
4. my rich uncle offered me a blank check to start my business
5. we expect taiwan will not interpret our support as a blank check to resist dialogue