Winter vehicle, touring grounds, glistened (8)
I believe the answer is:
sparkled
'glistened' is the definition.
(I've seen this in another clue)
'winter vehicle touring grounds' is the wordplay.
'winter vehicle' becomes 'sled' (I've seen this in another clue).
'touring' means one lot of letters goes inside another (touring can mean going round).
'grounds' becomes 'park' (grounds can mean parkland around a building).
'sled' placed around 'park' is 'SPARKLED'.
(Other definitions for sparkled that I've seen before include "Scintillated, shone" , "Glittered, scintillated" , "Scintillated, flashed" .)