Crossword Genius

Charge by a Spanish holiday area (5)

Ross

I believe the answer is:

costa

I'm a little stuck... Click here to teach me more about this clue!

'spanish holiday area' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'charge by a' is the wordplay.
'charge' becomes 'cost' (I've seen this in other clues).
'by' is a charade indicator (letters next to each other).
'cost'+'a'='COSTA'

Can you help me to learn more?

(Other definitions for costa that I've seen before include "A Spanish coast like Del Sol" , "part taken from man, originally" , "A Spanish coast, perhaps del Sol" , "__ Brava, region of northeast Spain" , "place for cheap holiday" .)

I've seen this clue in The Times.
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