Meadow, pasture (3)
I believe the answer is:
lea
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">meadow</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(a lea is a grassy area)</span><br/ ><br/ >'<span class="explanation-format__original">pasture</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(both can mean a field)</span><br/ ><br/ ></span>
(Other definitions for lea that I've seen before include "''The lowing herd winds slowly o'er the ... '' (Gray)" , "Open arable land (poet.)" , "Field" , "Pasture, London river" , "authority for teachers" .)