Also known as … (5)
I believe the answer is:
alias
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">also known as</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alias that I've seen before include "one's assumed" , "Handle that isn't genuine" , "aka" , "False identity" , "Otherwise called" .)