Wind - endless prank of stomach (7)

I believe the answer is:

gastric

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'of stomach' is the definition.
(relating to the stomach)

'wind endless prank' is the wordplay.
'wind' becomes 'gast' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'endless' indicates the central letters.
'prank' becomes 'capriccio' (both can mean a quick movement).
The centre of 'capriccio' is 'ric'.
'gast'+'ric'='GASTRIC'

Can you help me to learn more?

(Other definitions for gastric that I've seen before include "Stomachic" , "Intestinal" , "touching stomach" , "Relating to or involving the stomach" , "Pertaining to the stomach" .)

I've seen this clue in The Mirror.

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