Parched with heat (4)
I believe the answer is:
arid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">parched with heat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for arid that I've seen before include "water shortage?" , "Sterile" , "Excessively dry" , "Dry and unfertile" , "Tedious; short of rain" .)