Well-groomed old farm animals (4)
I believe the answer is:
neat
This clue might be a double definition.
'well-groomed' is the first definition.
(synonyms)
'farm animals' is the second definition.
(I've seen this before)
'old' acts as a link.
I am not very happy about this link. It may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for neat that I've seen before include "Steer - straight - trim" , "Finished" , "Cool - without a mixer" , "lacking water" , "beef" .)