Snow leopard (5)
I believe the answer is:
ounce
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">snow leopard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(ounce is an alternative name for the snow leopard)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ounce that I've seen before include "Fraction of a pound" , "One sixteenth of a pound" , "Wild cat - small weight" , "little weight" , "not weighing very much" .)