Lord's estate (7)
I believe the answer is:
demesne
'lord's estate' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for demesne that I've seen before include "Seed men (anag) -- land attached to a property and retained for the owner's personal use" , "Land attached to manor" , "Large landed property" , "Extensive landed property" , "Estate; sound like belittle" .)