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# jacks

noun, plural of jack (a jack, jacks); also the game «jacks»

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

## Everyday

1. Jacks is a children's game where you toss a small ball and pick up small metal or plastic pieces called jacks before catching it. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#m1)
2. Jacks are playing cards with a picture of a young man, worth between 10 and the queen. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#m2)
3. A jack is a tool that lifts a car off the ground. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#m3)
4. (informal, Australia) «Jacks» means police; «be jack of» means be tired of. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#m4)

### In the lessons

Used in playground games, card games and car safety (use a jack to change a tyre). In maths, a standard deck has 4 jacks out of 52 cards.

### Examples

- We played jacks at break time. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x1)
- She picked up three jacks before the ball bounced. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x2)
- He had two jacks in his hand of cards. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x3)
- Dad used a jack to lift the car. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x4)
- There are four jacks in a pack of cards. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x5)
- Never crawl under a car held only by a jack. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jacks/#x6)

### Note

Also called «knucklebones» or «fivestones» in the UK and Australia. In probability: chance of drawing a jack = 4 out of 52, or 1 in 13. Safety: a car on a jack can fall.

## On Mova

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