Societal standard (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">societal standard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for norm that I've seen before include "Standard, criterion" , "Drawing stick" , "Average result" , "Standard level of performance" , "Average level of achievement" .)