Fewer round animal (3)
I believe the answer is:
'animal' is the definition.
(I know that ewe is a type of herbivore)
'fewer round' is the wordplay.
'EWE' is hidden within the letters.
However, I am not sure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for ewe that I've seen before include "Dam of a sheep" , "Wool producer" , "Wool supplier" , "Language" , "Lamb's dam" .)