1. past tense of cannonball; to jump or dive into water with the body curled into a tight ball, typically creating a large splash
Usage: informal; commonly used in recreational swimming contexts
2. past tense of cannonball; to move or travel at high speed, often recklessly or with force
Usage: informal; figurative use

Examples

• The kids cannonballed into the pool one after another.
• She cannonballed off the diving board and made a huge splash.
• He cannonballed through the crowd to reach the exit.
• The car cannonballed down the highway at dangerous speeds.
• We cannonballed into the lake on a hot summer day.