Crossing one game with another (7,6)
I believe the answer is:
pontoon bridge
'crossing' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'one game with another' is the wordplay.
'one game' becomes 'pontoon' (I've seen this before).
'with another' becomes 'bridge' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pontoon'+'bridge'='PONTOON-BRIDGE'
Can you help me to learn more?
(Other definitions for pontoon bridge that I've seen before include "Floating structure for crossing water" , "channel crossing" , "River crossing on floating supports" , "A large float passing between banks" , "Makeshift way to get over current" .)