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# cannonball

noun (a cannonball, cannonballs); verb (informal: cannonball, cannonballed)

«cannonball» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A cannonball is a heavy round metal or stone ball that used to be fired from a cannon. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#m1)
2. (informal) A cannonball is a jump into a swimming pool with your knees tucked up to your chest, which makes a big splash. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#m2)
3. (informal) To cannonball means to move very fast and with force. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#m3)

### In the lessons

In history lessons and pirate stories, cannonballs are fired in battles and sieges. At the swimming pool, a "cannonball" is a fun jump, though lifeguards may stop it when people are near. In science, cannonballs are used to talk about falling objects and gravity. Phrases: «fire a cannonball», «do a cannonball», «cannonball run».

### Examples

- The pirates loaded a cannonball into the cannon. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x1)
- You can still see a cannonball stuck in the old castle wall. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x2)
- Jake did a cannonball and soaked everyone. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x3)
- No cannonballs in the shallow end! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x4)
- The cannonball hit the ship's mast. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x5)
- A heavy cannonball and a light ball fall at almost the same speed if there is little air. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x6)
- The dog came cannonballing down the stairs. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/#x7)

### Note

Countable noun, one word. Trap and myth: a heavier object does not fall much faster than a lighter one of the same shape; air resistance makes the difference. Safety: only cannonball into deep water when no one is near.

## On Mova

- [Trees and pragmatics of «cannonball» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cannonball/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«cannonball» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/cannonball.html) on Mova free.