Home established by a Pole (4)
I believe the answer is:
nest
'home' is the definition.
(I've seen this before)
'established by a pole' is the wordplay.
'established' becomes 'est' (I've seen this in other clues).
'by' means one lot of letters go next to another.
'a pole' becomes 'n' (**).
'est' after 'n' is 'NEST'.
(Other definitions for nest that I've seen before include "Roost" , "Structure for laying eggs" , "Snug retreat" , "Accommodation for hobby, say" , "Cosy place" .)