Crossword Genius

A sort of joke, possibly up north (3)

Ross

I believe the answer is:

pun

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'a sort of joke' is the definition.
I can't judge whether this definition defines the answer.

'possibly up north' is the wordplay.
'possibly' indicates anagramming the letters.
'north' becomes 'N' (abbreviation).
'up' anagrammed gives 'pu'.
'pu'+'n'='PUN'

Can you help me to learn more?

(Other definitions for pun that I've seen before include "joke" , "Humorous play on words" , "A play on words, perhaps the lowest form of wit" , "A play on words - not the height of wit" , "Form of wordplay" .)

I've seen this clue in the Evening Standard.
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