Charge bishop for lecturer's drink (4)
I believe the answer is:
bevy
'drink' is the definition.
(I have seen 'a drink' mean 'bevy' so perhaps 'drink' could also mean 'bevy')
I can't explain the rest of the clue.
(Other definitions for bevy that I've seen before include "Many women" , "Flock of larks; group of beautiful women" , "Flock; alcoholic drink" , "Collective noun for beauties" , "Group of birds or girls" .)