Building or organised arrangement (9)
I believe the answer is:
structure
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">building or organised arrangement</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 structure that I've seen before include "Edifice" , "Building; framework" , "Building or organised arrangement" , "make-up" .)