Crossword Genius

A drink on the side (4)

Ross

I believe the answer is:

port

I believe this is a double definition.

'a drink' is the first definition.
(port is a kind of drink)

'the side' is the second definition.
(port is a kind of side)

'on' is the link.

(Other definitions for port that I've seen before include "Light enough to carry" , "Sweet dark red fortified wine taken after meal" , "After-dinner wine" , "Drink passed to the left" , "Ship's left - Dover, perhaps" .)

I've seen this clue in the Evening Standard.
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