Formicary (7)
I believe the answer is:
anthill
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">formicary</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that formicary can be written as anthill)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for anthill that I've seen before include "Home to thousands" , "Nest" , "There's much work to be done here" , "Many a worker here" , "Built-up colony" .)