Relish visiting Devizes tomorrow (4)
I believe the answer is:
zest
'relish' is the definition.
('zest' can be a synonym of 'relish')
'visiting devizes tomorrow' is the wordplay.
'visiting' says the answer is hidden in the clue (the answer 'visits' the inside of the clue).
'ZEST' is hidden in the letters of 'devizes tomorrow'.
(Other definitions for zest that I've seen before include "Joie de vivre" , "Verve, gusto" , "Great energy; citrus peel" , "Great energy, piquancy" , "Energy (from a lemon?)" .)