Depressed; moo (3)
I believe the answer is:
low
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">depressed</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that depressed can be written as low)</span><br/ ><br/ >'<span class="explanation-format__original">moo</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that moo can be written as low)</span><br/ ><br/ ></span>
(Other definitions for low that I've seen before include "Make a cow-like noise" , "Depressed or base" , "SECOND PART OF 14" , "Opposite of high" , "Not elevated, may be base" .)