Boxing blow (4)
'boxing blow' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hook that I've seen before include "Short punch; catchy passage" , "Punch; fish catcher" , "Bent piece of metal for catching" , "Peg for hanging" , "good catch" .)
(Other definitions for uppercut that I've seen before include "Punch delivered vertically to chin" , "Part of boxer's repertoire" , "Boxing punch delivered vertically" , "Blow from fist to chin" , "one must take it on the chin" .)
'boxing blow' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for jab that I've seen before include "Inoculation" , "Short stiff blow or thrust" , "Injection" , "A short stiff punch" , "Prod" .)