A globe of glass or crystal used to foretell the future. / (by extension) A way of seeing into the future. / One of the magickal tools of Wicca, used for divination and altar purposes

(basketball) A thrown ball that misses the basket, and completely fails to touch the net or supporting hoop. / (by extension) Any ball-like object that widely misses its intended target when thrown.

plural of crystal ball

(Australian rules football) The action of a player keeping hold of the ball when tackled. When tackled the player must kick or handpass the ball and failing to do so (provided the opportunity was given) results in a free kick to the tackler.

In billiards, a circumstance in which a fault by another player, such as a scratch, permits the competitor to take the cue ball in hand and place it anywhere on the table.

plural of ball in hand

plural of ball bearing

(engineering) A bearing assembly which uses spherical bearing balls as the rolling elements.

(historical) A muzzle-loading bullet with a hollow base, much used in the second half of the nineteenth century.

(slang) A cramp-like ache in the testicles and prostate region caused by prolonged sexual arousal; testicles experiencing such an ache. / (slang, figuratively) Unfulfilled sexual desire.