Author's lyrical work lacking effort (3)
I believe the answer is:
poe
'author's' is the definition.
(Edgar Allan Poe)
'lyrical work lacking effort' is the wordplay.
'lyrical work' becomes 'poetry'.
'lacking' indicates named letters should be taken away.
'effort' becomes 'try' ('try' can be a synonym of 'effort').
'poetry' with 'try' removed is 'POE'.
(Other definitions for poe that I've seen before include "The Raven writer" , "Edgar Allan . . ., American writer of creepy stories" , "He wrote short stories" , "Edgar Allan . . ., writer of spooky tales" , "Short-story writer" .)