Answer:

uppercut

Answer	Crossword Clue
UPPERCUT	Jaw breaker?
UPPERCUT	Knockout punch
UPPERCUT	Likely knockout blow

UPPERCUT	Pugilist's punch
UPPERCUT	Chuck steak, for example?
UPPERCUT	Many a knockout punch
UPPERCUT	Blow to the chin, often
UPPERCUT	Boxing punch
UPPERCUT	Boxing blow.
UPPERCUT	Type of blow.
UPPERCUT	Defensive trump play

UPPERCUT	Potent punch
UPPERCUT	Knockout punch, at times

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.