Cage for poultry (7)
I believe the answer is:
hencoop
'cage for poultry' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hencoop that I've seen before include "Chicken house" , "Poultry house" , "Cage holding poultry" , "where poultry are kept" , "one in 3rd" .)