Contains rum, but is associated with gin (5)
I believe the answer is:
rummy
'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" .)