Crowd together (6)
I believe the answer is:
huddle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crowd together</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 huddle that I've seen before include "Crowd together in small space" , "Powwow" , "Come closely together" , "Gather together" , "Nestle or crowd together" .)