Young cow or bull (4)
I believe the answer is:
calf
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">young cow</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(a calf is a young cow)</span><br/ ><br/ >'<span class="explanation-format__original">bull</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for calf that I've seen before include "beef" , "Bit of leg" , "Is it above the ankle" , "Young seal" , "Newborn cow" .)