Crossword Genius

A government department of note (8)

Ross

I believe the answer is:

treasury

I believe this clue is a double definition.

'a government department' is the first definition.
(I know that treasury is a type of government department)

'note' is the second definition.
(thesaurus)

'of' is the link.

(Other definitions for treasury that I've seen before include "Exchequer - store for valuables" , "Government department in charge of finances" , "Its valued contents" , "Government finance department" , "British government department managing finances" .)

I've seen this clue in the Evening Standard.
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