Stretches of land (6)
I believe the answer is:
tracts
'stretches of land' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tracts that I've seen before include "Large stretches of land or religious pamphlets" , "Plots" , "Extended areas of land" , "Expanses of land or pamphlets" , "leaflets" .)