Group of geese (6)
I believe the answer is:
gaggle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">group of geese</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for gaggle that I've seen before include "Collective noun for geese" , "flock of birds" , "Cackling sound" , "Alternative name for a flock of geese" , "Group of geese" .)