An idiot that might get up your nose? (7)

I believe the answer is:

charlie

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'an idiot that might get up your nose?' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

Can you help me to learn more?

(Other definitions for charlie that I've seen before include "Chaplinesque man" , "Code word < for silly fellow" , "tail-ender" , "Fool - drug (slang)" , "Code word for letter C" .)

I've seen this clue in The Times.

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