One run (6)
I believe the answer is:
single
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">one</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">run</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(type of run in cricket)</span><br/ ><br/ ></span>
(Other definitions for single that I've seen before include "Still miss" , "Individual - unmarried" , "Just one, or unmarried" , "Solitary or unwed" , "Free" .)