The captain's game? (6)
I believe the answer is:
bridge
This could be a double definition.
'the captain's' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'game?' is the second definition.
(card game)
Can you help me to learn more?
(Other definitions for bridge that I've seen before include "Bony upper part of nose; card game" , "Connection crossing river etc" , "See 14" , "Can be contract or cantilever" , "Card-game" .)