A solid or hollow sphere, or roughly spherical mass.

"a ball of spittle; a fecal ball"

A round or ellipsoidal object.

(mildly, usually in the plural) A testicle.

A leather-covered cushion, fastened to a handle called a ballstock; formerly used by printers for inking the form, then superseded by the roller.

A large pill, a form in which medicine was given to horses; a bolus.

To form or wind into a ball.

"to ball cotton"

To heat in a furnace and form into balls for rolling.

To have sexual intercourse with.

To gather balls which cling to the feet, as of damp snow or clay; to gather into balls.

"The horse balls; the snow balls."

(usually in present participle) To be hip or cool.

To play basketball.

To punish by affixing a ball and chain

An appeal by the crowd for holding the ball against a tackled player. This is heard almost any time an opposition player is tackled, without regard to whether the rules about "prior opportunity" to dispose of the ball are fulfilled.

A formal dance.

A very enjoyable time.

"I had a ball at that concert."