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# jack

noun (a jack, jacks); verb (jack, jacks, jacked, jacking — jack up, jack in); also a name (Jack)

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

## Everyday

1. A tool for lifting a heavy thing, like a car, a little way off the ground. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m1)
2. (cards) A playing card with a picture of a young man, between the ten and the queen; also called the knave. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m2)
3. (electric) A socket where you plug in a lead, like a headphone jack. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m3)
4. (games) jacks — a children's game of picking up small metal pieces while bouncing a ball; in bowls, the small white ball. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m4)
5. (ship) A small flag on a ship, as in the Union Jack, the UK flag. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m5)
6. (a name) Jack, a boy's name, often a nickname for John; in fairy tales Jack is a brave clever boy. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m6)
7. (verb, informal) jack up = lift with a jack or raise prices; (UK slang) jack in = give up; (slang) jack = steal («he jacked my bike»). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m7)
8. (male animal) A male donkey or hare is a jack. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#m8)

### In the lessons

In fairy tales: «Jack and the Beanstalk», «Jack and Jill». Sayings: «jack of all trades» (someone who can do many jobs), «hit the jackpot», «jack-in-the-box». In Alice, the Knave (Jack) of Hearts stole the tarts. In safety: never go under a car held only by a jack. Phrases: «car jack», «headphone jack», «Union Jack», «jack it in».

### Examples

- Dad used a jack to lift the car and change the tyre. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x1)
- The Jack of Hearts stole the tarts. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x2)
- Plug your headphones into the jack. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x3)
- Jack climbed the beanstalk. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x4)
- We played jacks on the playground. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x5)
- The Union Jack is the flag of the United Kingdom. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x6)
- He was fed up and jacked in his job (UK slang). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x7)
- The shop jacked up the price of sweets. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x8)
- A jack-in-the-box popped up and made the baby laugh. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x9)
- My uncle is a jack of all trades. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x10)
- Jack uttered a cry of surprise. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/J/jack/#x11)

### Note

Jack (name) has a capital letter. «Jack» and «knave» name the same card. The game «jacks» is plural. Slang «jack» = steal is rude-ish street talk; «jack all» (UK slang) = nothing.

## On Mova

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