Move quickly about in south of France (4)

I believe the answer is:

scud

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'move quickly' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for scud that I've seen before include "(Of clouds) move fast because driven by winds" , "Move quickly (as if running before a gale)" , "Gust of wind" , "Sail swiftly before the wind - missile" , "Gulf war missile" .)

I've seen this clue in The Sun and The Times.

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