Wine endlessly consumed in unspoilt meadow (7)
I believe the answer is:
pasture
'meadow' is the definition.
(thesaurus)
'wine endlessly consumed in unspoilt' is the wordplay.
'wine' becomes 'asti' (I've seen this before).
'endlessly' means to remove the last letter.
'consumed in' means one lot of letters goes inside another.
'unspoilt' becomes 'pure'.
'asti' with its final letter taken away is 'ast'.
'ast' placed within 'pure' is 'PASTURE'.
(Other definitions for pasture that I've seen before include "Meadowland" , "Grassland" , "Grass for grazing" , "Land for grazing cattle" , "Field suitable for grazing" .)