Two score (5)
I believe the answer is:
forty
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">two score</span>' is the definition.<br/ ><span class="explanation-format__explanation">(two lots of twenty)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for forty that I've seen before include "number of penitential days" , "-- winks, a short sleep" , "Kip" , "When life begins" , "Two score" .)