Upper classes (11)
I believe the answer is:
aristocracy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">upper classes</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 aristocracy that I've seen before include "Privileged class" , "those born ahead of others?" , "Noble class" , "Upper classes" , "Upper class, nobility" .)