Crossword Genius

Advertiser offering snack and regular meals? (8,5)

Ross

I believe the answer is:

sandwich board

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

'advertiser' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'snack and regular meals?' is the wordplay.
'snack' becomes 'sandwich' (I've seen this before).
'and' says to put letters next to each other.
'regular meals?' becomes 'board' (I've seen this in another clue. I am not sure about the 'regular' bit.).
'sandwich'+'board'='SANDWICH-BOARD'

'offering' acts as a link.

Can you help me to learn more?

(Other definitions for sandwich board that I've seen before include "Advertisement carried on the person" , "Mobile advertisement" , "Advertisement carried up and down the street" , "I come along road with the bill" , "Advertising hoarding carried up and down a street" .)

I've seen this clue in The Telegraph.
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