Long lunches? (4)

I think it could be either:

Which length description are you looking for?:

subs

'long lunches?' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for subs that I've seen before include "Reserves at football (sl.)" , "Advance payments" , "vehicles" , "Underwater vessels (abbr)" , "Club members' payments" .)

I've seen this clue in the King Feature Syndicate.

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