Ball

Group of balls

A ball is a round object (usually spherical, but can sometimes be ovoid) with several uses such as sports. A ball can be either hollow and inflated, such as a basketball, or solid, such as a ball bearing. Ball-like is used metaphorically sometimes to denote something spherical or spheroid.

Different types of balls include:

• Sports balls (footballs, soccer balls, baseballs, Tennis balls, etc. [with ball typically being slang as in "play ball"])
• Playground balls
• Cage Balls
• Yoga balls
• Bouncy balls
• Medicine balls
• Hopper balls
• Bowling ball

• Armadillos and human beings can curl up into a ball, humans sometimes make balls with the fist
• The testes (or testis in some parts of the world) are sometimes called balls. One testicle would be a ball (singular).