Cow's offspring (4)
I believe the answer is:
calf
'cow's offspring' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for calf that I've seen before include "Part of the leg - baby farm animal" , "Young bovine animal" , "Young cow/bull" , "Animal that yields veal" , "Is it above the ankle" .)