The ball used in the American and Canadian football.
A quantity of string, thread, etc., wound into a spherical shape.
Association football: a game in which two teams each contend to get a round ball into the other team's goal primarily by kicking the ball. Known as soccer in Canada, the United States, Australia, and New Zealand.
Any spherical (or nearly spherical) object.
A spherical body; a globe; especially, one of the celestial spheres; a sun, planet, or star.