Poem part (6)
I believe the answer is:
stanza
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">poem part</span>' is the definition.<br/ ><span class="explanation-format__explanation">('stanza' is part of 'poem')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for stanza that I've seen before include "Division of a poem" , "Unit of a poem" , "Lines often repeated" , "Group of lines of verse" , "Group of poetic lines" .)