A meal, with a bit of luck, on the way to church (5)

I believe the answer is:

lunch

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'a meal' is the definition.
(I know that lunch is a meal)

'with a bit of luck on the way to church' is the wordplay.
'with' says to put letters next to each other.
'a bit of luck on the way' becomes 'lun' (I can't explain this - if you can you should believe this answer much more).
'to church' becomes 'ch' (common abbreviation).
'lun'+'ch' is 'LUNCH'.

Can you help me to learn more?

(Another definition for lunch that I've seen is " Midday meal".)

I've seen this clue in the Evening Standard.

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