Fringe (4)
I believe the answer is:
edge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fringe</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for edge that I've seen before include "Advantage (informal)" , "Border - advantage" , "Brim" , "Rim,border" , "marginal advantage" .)