Harbinger (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">harbinger</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for omen that I've seen before include "Prophetic significance" , "Augury, portent" , "Portent, prophetic indicator" , "Sign of something to come" , "Event regarded as a prophetic sign of good or evil" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">harbinger</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for herald that I've seen before include "Proclaimer" , "Official crier or messenger" , "Harbinger, messenger" , "Announce, presage" , "and 14: 'Hark! The -- -- sing' (carol)" .)