Crossword Genius

Not being straight in a game (7)

Ross

I believe the answer is:

curling

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

'game' is the definition.
(I know that curling is a type of game)

'not being straight in a' is the wordplay.
I cannot really see how this works, but
'in' is within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for curling that I've seen before include "Hairdo equipment -- closing grunt (anag)" , "providing treatment for shock?" , "Game played on ice" , "Doing the twist" , "Sport played on ice" .)

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