Three-part poem and gossip about penning it (6)
I believe the answer is:
trifid
'three-part poem' is the definition.
I can't judge whether this defines the answer.
'gossip about penning it' is the wordplay.
'gossip' becomes 'dirt' (as in the phrase 'dish the dirt').
'about' is a reversal indicator.
'penning' indicates putting letters inside.
'it' becomes 'if' (I am not sure about this - if you are sure you should believe this answer much more).
'dirt' backwards is 'trid'.
'trid' going around 'if' is 'TRIFID'.
'and' acts as a link.
Can you help me to learn more?
(Another definition for trifid that I've seen is " Botanically divided into three lobes".)