Go over card game (6)
I believe the answer is:
bridge
I believe this is a double definition.
'go over' is the first definition.
(thesaurus)
'card game' is the second definition.
(bridge is a kind of card game)
(Other definitions for bridge that I've seen before include "support for strings" , "Overpass" , "spanner" , "Card game involving North, South, East and West" , "Game; crossing" .)