Reach not the last resort (3)
I believe the answer is:
spa
'resort' is the definition.
(spa is a kind of resort)
'reach not the last' is the wordplay.
'reach' becomes 'span' (I've seen this in another clue).
'not the last' means to remove the last letter.
'span' with its final letter taken away is 'SPA'.
(Other definitions for spa that I've seen before include "Watering hole" , "town in Belgium" , "well" , "Hydromassage facility" , "Watering place" .)