Excellent protest at noon (5)

I believe the answer is:

demon

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'excellent protest at noon' is the definition.
I can't tell whether this definition defines the answer.

'protest at noon' is the wordplay.
'protest' becomes 'demo' (demonstration).
'at' means one lot of letters go next to another.
'noon' becomes 'n'.
'demo'+'n'='DEMON'

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(Other definitions for demon that I've seen before include "Imp" , "Evil spirit, devil" , "Wizard" , "Evildoer" , "Fanatic; devil" .)

I've seen this clue in The Sun.

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