Very dry (4)
I believe the answer is:
arid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">very dry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for arid that I've seen before include "Parched with heat" , "Lacking sufficient rainfall" , "water shortage?" , "Without much rainfall" , "Dry and parched, as with regions" .)