Insects; rugby team (5)
I believe the answer is:
wasps
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">insects</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >'<span class="explanation-format__original">rugby team</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(Wasps Rugby Football Club)</span><br/ ><br/ ></span>
(Other definitions for wasps that I've seen before include "Members of rugby team" , "Striped stinging insects" , "Ones playing together" , "Rugby club" , "Insects; rugby union team" .)