Half a score (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">half a score</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ten that I've seen before include "honour" , "How many" , "Dudley Moore/Bo Derek film" , "X-WORD" , "Base of decimal system" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">half a score</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 decade that I've seen before include "Time period" , "Ten-year span" , "Period of ten years" , "The 1960s, for example" , "Ten-year period" .)