ALL meanings of cannon-ball
can·non-ball
C c - noun cannon-ball a missile, usually round and made of iron or steel, designed to be fired from a cannon. 1
- noun cannon-ball Tennis. a served ball that travels with great speed and describes little or no arc in flight. 1
- noun cannon-ball anything that moves with great speed, as an express train. 1
- adjective cannon-ball made from a curled-up position with the arms pressing the knees against one's chest: a cannonball dive. 1
- adjective cannon-ball moving at great speed: a train known as a cannonball express. 1