Answer: headpin

AnswerCrossword Clue
HEADPIN

It's hit hardest during a strike

HEADPIN

Lane's number one

HEADPIN

It's denoted by a 1

HEADPIN
It's closest to the foul line
HEADPIN
It's placed midway between the gutters
HEADPINBowler's target.
HEADPINFirst thing usually hit by a bowling ball
HEADPINOne easily bowled over?