Residence registered to a poet (5)
I believe the answer is:
homer
'to a poet' is the definition.
(Homer is an example)
'residence registered' is the wordplay.
'residence' becomes 'home' (home is a kind of residence).
'registered' becomes 'R' (abbreviation, as in registered trademark).
'home'+'r'='HOMER'
(Other definitions for homer that I've seen before include "Greek author; pigeon" , "Greek poet, c. 800 BC" , "Bart Simpson's father" , "pigeon, maybe" , "successful run in America?" .)