Card game providing something for one to do (4)
I believe the answer is:
solo
I believe this is a double definition.
'card game' is the first definition.
(I've seen this before)
'something for one to do' is the second definition.
(I've seen this in another clue)
'providing' acts as a link.
(Other definitions for solo that I've seen before include "Fly aircraft" , "Piece for single performer" , "By oneself" , "It's performed alone" , "Whist variant" .)