Card game cry (3)
'card game cry' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for gin that I've seen before include "Spirit; trap" , "Alcoholic drink once called mother's ruin" , "A short" , "Trap for snaring small mammals" , "Alcohol for the snare" .)
(Other definitions for uno that I've seen before include "card game" , "One in Italy" .)