Game derived partly from polo? (3)
I believe the answer is:
loo
'game' is the definition.
(historical card game)
'derived partly from polo?' is the wordplay.
I cannot quite see how this works, but
'from' could be 'o' (I've seen this in other clues) and 'o' is present in the answer.
The remaining letters 'lo' 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 loo that I've seen before include "A colloquial toilet" , "The little room - card game" , "Toilet (informal)" , "Card-game" , "bog" .)