Wander in city, say (4)

I believe the answer is:

roam

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'wander' is the definition.
(I know that wander can be written as roam)

I can't explain the rest of the clue.

(Other definitions for roam that I've seen before include "Peregrinate" , "Move about aimlessly" , "Travel aimlessly" , "Walk without a specific destination" , "Travel widely" .)

I've seen this clue in The Mirror.

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