(anatomy, informal) The fleshy portion, opposite the nail, of the first segment (first phalange) of the human thumb.

(American football, Canadian football, rugby) A player who carries the football.

A hard, solid ball with an interior of cork and a leather case with a slightly raised sewn seam. Traditionally red, but other colors are available.

(cricket) A cricket ball that has been used in a previous match, or used in the current match for more than 30 overs.

(obsolete, 1800s) baseball

Of an early loading system for handguns where the percussion cap, powder, and bullet were separate components loaded individually into the gun. Typically used in early to mid 1800s.

Any game played with a ball. / A specific contest or match between teams playing such a game, in particular a baseball game.

(baseball) A curveball.

(baseball) A play where the catcher fails to stop a normally playable pitch and a runner advances.

(cricket) A ball that bounces off of the pitch immediately after being hit by the bat, and goes up in the air.