Crossword Genius

Mirrored number twelve (4)

Ross

I believe the answer is:

noon

I'm a little stuck... Click here to teach me more about this clue!

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

'mirrored number' is the wordplay.
'mirrored' becomes 'noo' (I can't justify this - if you can you should believe this answer much more).
'number' becomes 'n' (n can represent any number).
'noo'+'n'='NOON'

Can you help me to learn more?

(Other definitions for noon that I've seen before include "The middle of the day" , "12 pm" , "when PM starts" , "Twelve during daylight" , "See 8" .)

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