- a ball which is for firing out of a cannon
- a way of running at a swimming pool and jumping in creating a large splash, mimicking the flight and shape of a cannonball
- "I would call it a water-entry stunt, not a dive" — Coach O'Brien quoted in The New Yorker, 30 August 2004, p.40
- Dutch: kanonskogel , bommetje
- French: boulet de canon
- German: Kanonenkugel
Supplemental Details:Sponsor an extended definition for cannonball for as little as $10 per month. Click here to contact us.