Southwestern spread (6)
I believe the answer is:
rancho
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">southwestern spread</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 rancho that I've seen before include "Small village" , "US hut" , "hut for farm-workers" .)