Health resort in Spain (3)

I believe the answer is:

spa

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'health resort' is the definition.
(spa can mean a health resort)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for spa that I've seen before include "Boston" , "Bath, possibly" , "Where people go for spring" , "A therapeutic hot spring" , "Watering-place" .)

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