Final Greek letter (5)
I believe the answer is:
omega
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">final greek letter</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for omega that I've seen before include "Consummation" , "End of sequence" , "Art of story-telling by body movement" , "in Greece, the limit!" , "character in Greek literature?" .)