Poet dropping in for a bit of harmless fun (4)
I believe the answer is:
lark
'harmless fun' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for lark that I've seen before include "High-flying singer - frolic" , "Harmless adventure" , "Amusing escapade; bird" , "Singing bird and piece of harmless mischief" , "flier" .)