Royal messenger (6)
I believe the answer is:
herald
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">royal messenger</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 herald that I've seen before include "and 14: 'Hark! The -- -- sing' (carol)" , "Person who announces important news" , "Official crier or messenger" , "Proclaim the approach of, like old messenger" , "Harbinger, messenger" .)