Office or agency (6)
I believe the answer is:
bureau
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">office</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">agency</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">or</span>' acts as a link.<br/ ></span>
(Other definitions for bureau that I've seen before include "Foreign office" , "The ------, familiar name of the FBI" , "Wtiting desk" , "The B in the FBI" , "Item of furniture" .)