Homer's hard poem going in novel (6,6)
I believe the answer is:
homing pigeon
'homer's' is the definition.
('homing pigeon' can be a synonym of 'homer')
'hard poem going in novel' is the wordplay.
'hard' becomes 'h'.
'novel' is an anagram indicator.
'poem'+'going'+'in'='poemgoingin'
'poemgoingin' with letters rearranged gives 'omingpigeon'.
'h'+'omingpigeon'='HOMING PIGEON'
(Other definitions for homing pigeon that I've seen before include "Messenger bird" , "Trained bird" , "Trained flier" .)