Does it never blow straight? (4)

I believe the answer is:

wind

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'blow straight?' is the definition.
'wind' can be an answer for 'blow' (thesaurus). I am unsure of the 'straight?' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for wind that I've seen before include "Gust, e.g." , "Not follow straight path" , "Twist, turn; breeze" , "Meaningless talk; twist" , "Breath; twist" .)

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

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