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Upgrade hospital in Cornish town without parking zone (7)

Ross

I believe the answer is:

enhance

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'upgrade' is the definition.
(thesaurus)

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(Other definitions for enhance that I've seen before include "Improve the value of (something)" , "Improve, add to attractiveness of" , "'Improve, augment (7)'" , "To improve matters" , "Improve, make more attractive" .)

I've seen this clue in The Independent.
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