Meaning

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leather-covered cushion, fastened to a handle called a ballstock; formerly used by printers for inking the form, then superseded by the roller.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

Meaning

• 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

Meaning

• 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.