Pentameter parts (5)
I believe the answer is:
iambs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pentameter parts</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 iambs that I've seen before include "feet" , "bits of poetry" .)