What could be bridge diversion (4)
I believe the answer is:
game
'diversion' is the definition.
(I know that game is a type of diversion)
'what could be bridge' is the wordplay.
I cannot really understand how this works, but
'be' could be 'am' and 'am' is found in the answer.
The remaining letters 'ge' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for game that I've seen before include "Willing; plucky" , "Ducks and drakes, for example" , "Play or sport" , "Scrabble or Monopoly, say" , "See 8" .)