Sicilian spouter (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sicilian spouter</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 etna that I've seen before include "Neat kind of European volcano" , "Highest peak in Italy south of the Alps" , "smoker in Sicily" , "A feature of Sicily" , "Sicilian volcano" .)