Cage for poultry (7)
I believe the answer is:
hencoop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cage for poultry</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 hencoop that I've seen before include "Chicken house" , "Poultry house" , "Cage holding poultry" , "where poultry are kept" , "one in 3rd" .)