A sharp blow? (7,4)

I believe the answer is:

cutting wind

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'a sharp blow?' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'sharp blow?' is the wordplay.
'sharp' becomes 'cutting' (similar in meaning).
'blow?' becomes 'wind' (blow is a kind of wind).
'cutting'+'wind'='CUTTING WIND'

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

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