Crossword Genius

Second wine is fun (5)

Ross

I believe the answer is:

sport

'fun' is the definition.
(I know that fun can be written as sport)

'second wine' is the wordplay.
'second' becomes 's' (common abbreviation).
'wine' becomes 'port' (port is a kind of wine).
's'+'port'='SPORT'

'is' acts as a link.

(Other definitions for sport that I've seen before include "Game; display" , "Eg, cricket" , "Recreation, play" , "Eg, rugby" , "Wear - game - generous type" .)

I've seen this clue in The Mirror.
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