Sea east of Sicily (6)
I believe the answer is:
ionian
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sea east of sicily</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ionian that I've seen before include "from Greek Islands" , "Sea between Greece and south Italy" , "Sea between Greece and Sicily" , "Sea between southern Italy and western Greece" .)