Coming, arrival (6)
I believe the answer is:
advent
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">coming</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(advent is the arrival or coming of something)</span><br/ ><br/ >'<span class="explanation-format__original">arrival</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(advent is a kind of arrival)</span><br/ ><br/ ></span>
(Other definitions for advent that I've seen before include "Christian season" , "Coming, arrival" , "The season leading up to Christmas" , "Time approaching Christmas" , "Forty days preceding Christmas" .)