Crossword Genius

Contains rum, but is associated with gin (5)

Ross

I believe the answer is:

rummy

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'gin' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for rummy that I've seen before include "Peculiar - card game" , "Card game; strange; like a spirit" , "Odd; card-game" , "with an alcoholic taste?" , "Set, sequence card game" .)

I've seen this clue in the Evening Standard.
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