Veering off ditches in the roadside (5)

I believe the answer is:

verge

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'roadside' is the definition.

I can't explain the remainder of the clue.

(Other definitions for verge that I've seen before include "Border - edge" , "Grass border along road" , "Margin or brink" , "Grass edging" , "Side of road" .)

I've seen this clue in the Sydney Morning Herald.

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