Do __ (2,3)
'do' is the definition.
(I know that do can be written as serve)
This is the entire clue.
(Other definitions for serve that I've seen before include "Put the tennis ball in play" , "Offer up" , "deal" , "Wait - start the game" , "Begin a tennis game" .)
'do' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for achieve that I've seen before include "Successfully conclude" , "Reach or accomplish" , "Manage to get" , "Skilfully bring about" , "Bring about by effort" .)
(Other definitions for you that I've seen before include "Second-person pronoun" , "Neither me, nor him" , "Second person pronoun" , "Thee" , "Person being addressed" .)