Meadow bare, having been cut (3)
I believe the answer is:
lea
'meadow' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
(Other definitions for lea that I've seen before include "Field" , "Meadow (poetic)" , "Grass area" , "Poetically, a piece of meadow or pasture" , "Open country" .)