Crossword Genius

A game lot of typists perhaps (4)

Ross

I believe the answer is:

pool

I'm a little stuck... Click here to teach me more about this clue!

'a game' is the definition.
(pool is a kind of game)

'lot of typists perhaps' is the wordplay.
I cannot quite see how this works, but
'of' could be 'o' and 'o' is located in the answer.
The remaining letters 'pol' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for pool that I've seen before include "Lido - kitty - ball game" , "Game played on a table with six pockets" , "Ball game - small body of water" , "Reserve" , "Put into common fund for sharing" .)

I've seen this clue in The Globe and Mail.
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