Special importance or significance (8)
I believe the answer is:
emphasis
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">special importance</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">significance</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for emphasis that I've seen before include "Stress, accentuation" , "Stress, special importance" , "Importance; priority" , "Stress laid on, eg, words" , "Stress given to a word" .)