Colony of bees (4)
I believe the answer is:
hive
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colony of bees</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 hive that I've seen before include "Insects' home - site of much activity" , "store" , "Queen's residence" , "where people are busy" , "A queen's home?" .)