A shortening of "11 Downing Street," the address of the residence of the Chancellor of the Exchequer of the United Kingdom, used by extension to refer to the Chancellor themselves or the UK's treasury department as a whole. Primarily heard in UK. What's the word from Number 11? How will this change affect our taxes? Number 10 and Number 11 Downing Street have to find a way to work together on this issue, or else it will never be resolved.
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