Use lay-by in Jersey? (8)

I believe the answer is:

pullover

'jersey?' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for pullover that I've seen before include "Woolly" , "Sweater or jumper" , "Go to side of road" , "Jersey" , "top gear?" .)

I've seen this clue in The Sun.

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