Turns round large urban area (6)

I believe the answer is:

sprawl

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'urban area' is the definition.
(I know that sprawl is a type of urban area)

'turns round large' is the wordplay.
'turns' becomes 'warps' (I can't explain this - if you can you should believe this answer much more).
'round' says the letters should be written backwards.
'large' becomes 'L' (eg in clothes sizes).
'warps' back-to-front is 'spraw'.
'spraw'+'l'='SPRAWL'

Can you help me to learn more?

(Other definitions for sprawl that I've seen before include "Spread out in ungainly way" , "Lounge" , "Lie with arms and legs spread about loosely" , "Ungainly posture" , "Sit lazily, with limbs spread wide" .)

I've seen this clue in The Times.

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