Commonly named (2-6)
I believe the answer is:
so-called
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">commonly named</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 so-called that I've seen before include "Commonly labelled" , "Named or styled as" , "Referred to by description open to question" , "Doubtful -- suspect" , "Popularly known as" .)