Type of deer (3)
I believe the answer is:
roe
'type of deer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for roe that I've seen before include "Hoofed animal(s)" , "A mass of fish-eggs" , "Fish eggs; small deer" , "Lobster's ripe ovary" , "Food from fish" .)