Christmas period (4)
I believe the answer is:
yule
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">christmas period</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for yule that I've seen before include "festive tide" , "Noel" , "Christmas period" , "The feast of Christmas" , "Festival" .)