noun
cannonball
KA-nuhn-bawl
noun
1
A round metal projectile fired from a cannon.
"Museum visitors can see cannonballs recovered from the old shipwreck."
2
A jump into water with knees tucked to the chest, made to create a big splash.
"He ran off the diving board and did a cannonball right next to his sister."
verb
1
To dive into water in this tucked, splashy style.
"The kids kept cannonballing off the dock all afternoon."
How to Use Cannonball
Learner’s notesIn plain EnglishA round cannon shot, or a big-splash pool jump done the same shape.
Common pairings
do a cannonball
cannonball into the pool
Word Forms
cannonballed past tense, cannonballs plural, cannonballs singular
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “cannonball”
A quick quiz — meaning, synonyms & usage
→
Fill the Gap
Can you complete this real example?
Museum visitors can see _____ recovered from the old shipwreck.
Etymology
From "cannon" plus "ball," describing the round shot fired from a cannon.