Loaded flat (5)

I believe the answer is:

flush

This clue is a double definition.

'loaded' is the first definition.
('flush' can be a synonym of 'loaded')

'flat' is the second definition.
(thesaurus)

(Other definitions for flush that I've seen before include "Cleanse by running water" , "Redden; level" , "Rouse game and put to flight" , "Rich" , "with a load of cash" .)

I've seen this clue in The Telegraph.

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