Grassy field
I believe the answer is:
lea
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grassy field</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for lea that I've seen before include "Field" , "Grazing land" , "'The lowing herd wind slowly o'er the . . .'" , "Open arable land (poet.)" , "grazing area" .)