Young cow (4)
'young cow' is the definition.
(a calf is a young cow)
This is all the clue.
(Other definitions for calf that I've seen before include "Young of domestic cattle" , "Baby elephant or whale" , "Young bovine animal" , "Roo's mum (A. A. Milne)" , "stocking filler" .)
'young cow' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for heifer that I've seen before include "a little lower" , "Female bovine that has not given birth" , "Cow that has borne one or no calves" , "beast" , "part of stock" .)