Crossword Genius

This meat served at midday meal? (8)

Ross

I believe the answer is:

luncheon

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'midday meal?' is the definition.
(I've seen this before)

'this meat served at' is the wordplay.
'this meat' becomes 'lunch' (lunch meat is a kind of meat).
'served at' becomes 'eon' (I can't explain this - if you can you should believe this answer much more).
'lunch'+'eon'='LUNCHEON'

Can you help me to learn more?

(Other definitions for luncheon that I've seen before include "fare at one?" , "Midday meal" , "Food" , "midday menu" , "part of formal board" .)

I've seen this clue in The Sun.
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