Entreat a person to buzz off! (6)
I believe the answer is:
begone
'person to buzz off' is the definition.
I can't judge whether this defines the answer.
'entreat a' is the wordplay.
'entreat' becomes 'beg' (I've seen this in another clue).
'a' becomes 'one'.
'beg'+'one'='BEGONE'
Can you help me to learn more?
(Other definitions for begone that I've seen before include "Archaic command to go away, banish" , "Archaic word of dismissal" , "shove off" , "Take a hike" , "Archaic injunction to go away" .)