1The historic fort still had its old cannons, but they were no longer loaded with cannonballs.
2He did a cannonball off the side of the pool, splashing everyone nearby.
3The museum had a collection of old cannonballs from the Civil War era.
4The kids loved doing cannonballs off the diving board during summer vacation.
5The pirate movie featured a dramatic scene where a cannonball exploded on the ship's deck.