Answer:

CONK

Answer	Crossword Clue
CONK	Knock on the noggin
CONK	Bop
CONK	Straighten, as hair

CONK	Brain
CONK	Rap on the head
CONK	Hit on the head
CONK	Stop running, with "out"
CONK	Bop on the bean
CONK	Bop on the noggin
CONK	Die, with "out"
CONK	Go to sleep, with "out"

CONK	... out (fizzle)
CONK	Knock on the noodle
CONK	Go kaput, with "out"
CONK	Bean
CONK	Noggin
CONK	Fail, with "out"
CONK	The head: Brit. slang.
CONK	Bash.

CONK	... out (fail, as a motor): Slang.
CONK	Head: Slang.
CONK	Hit on the head: Slang.
CONK	Stall, with "out": Slang.
CONK	... out (go dead)
CONK	Bop on the head
CONK	Knock out
CONK	Kin of bop

CONK	... out (stall)
CONK	Sandbag
CONK	Fail suddenly, with "out"
CONK	Go pffft, with "out"
CONK	Go pfft, with "out"
CONK	Collapse, with "out"
CONK	Crash, with "out"
CONK	Hit

CONK	... out: die
CONK	Stop running (with "out")
CONK	Crown

Crossword

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