Cube root of 1,000 (3)
I believe the answer is:
ten
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cube root of 1000</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ten that I've seen before include "time" , "Base of decimal system" , "Figure" , "How many" , "Roman numeral X" .)