Greek's equine haunch photo (6)
I believe the answer is:
hippic
'greek's equine' is the definition.
The definition suggests an adjective which matches the answer.
'haunch photo' is the wordplay.
'haunch' becomes 'hip' (I've seen this before).
'photo' becomes 'pic' (short for picture).
'hip'+'pic'='HIPPIC'
Can you help me to learn more?
(Other definitions for hippic that I've seen before include "Horsy" , "of horses" .)