Run; in addition (5)
I believe the answer is:
extra
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">run</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(cricket run)</span><br/ ><br/ >'<span class="explanation-format__original">in addition</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for extra that I've seen before include "no ball perhaps" , "Small part actor" , "Additional expense" , "Bolt-on" , "entry on scorecard?" .)