Some dropshot I sliced, regretting miss (4)
I believe the answer is:
otis
'regretting miss' is the definition.
(Miss Otis Regrets is a song)
'some dropshot i sliced' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'OTIS' is hidden in the letters of 'dropshot i sliced'.
(Other definitions for otis that I've seen before include "Miss -- Regrets, Cole Porter song" , "Lift man" , "Cole Porter's miss who was "unable to lunch today"" , "lift company" , "Place of worship; side part of head" .)