Ball (noun)

1. A round object that is thrown, hit, or kicked in a game.
2. A formal dance, especially one held by a royal court.
3. A small, usually round object that can be bounced or rolled.
4. A large, inflatable sphere used for play or exercise.
5. A cannonball.
6. A bullet.

Origin:

Late middle english (denoting a sphere): from old french balle, from latin balla (feminine) "ball", from greek ballē.

Examples:

1. She threw the ball back to the pitcher.
2. The royal couple will attend several balls during their visit.
3. He juggled three balls at once.
4. They play soccer using an inflatable ball.
5. The enemy was firing cannonballs at the fort.
6. The shot hit her in the shoulder, but the bullet didn't go all the way through.