Lump together (9)
I believe the answer is:
aggregate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lump together</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for aggregate that I've seen before include "Accumulate into total" , "The whole amount" , "Sum of many heterogenous things taken together" , "piece of granite perhaps" , "Accumulation" .)