Current problem for baby? (4)

I believe the answer is:

wind

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

'current' is the definition.
(wind is a type of current)

I can't explain the remainder of the clue.

(Other definitions for wind that I've seen before include "See 7" , "Twist; air movement" , "Meaningless talk; twist" , "Turn; current" , "Snake" .)

I've seen this clue in The Guardian.

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