Model to be followed, paragon (8)
I believe the answer is:
exemplar
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">model to be followed</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">paragon</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for exemplar that I've seen before include "Ideal model" , "A model or instance" , "A good model or type" , "Typical specimen" , "Epitome" .)