Answer:

cannonball

Answer	Crossword Clue
CANNONBALL	Splashy dive
CANNONBALL	Spherical projectile
CANNONBALL	"Human" circus performer

CANNONBALL	Spherical missile
CANNONBALL	A serve from Pancho Gonzales.
CANNONBALL	Civil War missile.
CANNONBALL	Dyan-Lucille
CANNONBALL	Saxophonist Adderley
CANNONBALL	Armament for a man-of-war
CANNONBALL	Dive done with the arms around the knees
CANNONBALL	Projectile of old