US farm (5)
I believe the answer is:
ranch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">us farm</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 ranch that I've seen before include "Agricultural business" , "US livestock farm" , "A large cattle-breeding farm" , "Large farm rearing particular livestock" , "American cattle farm" .)