Division of a long poem (5)
I believe the answer is:
canto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">division of a long poem</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 canto that I've seen before include "Each of sections into which long poem is divided" , "piece of poetry" , "part of long poem" , "Poetic piece" , "Musical part" .)