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Entertains Rex, say, with beers (7)

Ross

I believe the answer is:

regales

'entertains' is the definition.
(as in to entertain or regale someone with a story)

'rex say with beers' is the wordplay.
'rex' becomes 'r' (common abbreviation e.g. GR=George Rex, King Georg).
'say' becomes 'eg'.
'with' means one lot of letters go next to another.
'beers' becomes 'ales' (I've seen this before).
'r'+'eg'+'ales'='REGALES'

(Another definition for regales that I've seen is " Treats".)

I've seen this clue in The Times.
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