Nosey Nora asks such a lot of leaders (5)

I believe the answer is:

nasal

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'nosey' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for nasal that I've seen before include "of central feature" , "regarding the nose" , "Letter such as M or N" , "Like a twang" , "Of sound, as if it came through the nose" .)

I've seen this clue in the Sydney Morning Herald.

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