jack
B1Neutral, widely used across formal and informal contexts, with some technical uses.
Definition
Meaning
A tool, device, or person used for lifting, holding, or turning things; a common male name.
A playing card; a small flag; a socket; a device for roasting meat; a sailor; a type of fruit; to raise/lift (verb).
Linguistics
Semantic Notes
The word 'jack' is highly polysemous, covering tools, people, and objects. The core semantic field is 'device for lifting or connecting', but many extensions are based on the common male name or the 'male' concept (e.g., jack in a deck of cards).
Dialectal Variation
British vs American Usage
Differences
In British English, 'jack plug/socket' is common for audio connections; American English often uses 'phone jack' or 'audio jack'. 'Jack' as a verb meaning to abandon something ('to jack it in') is more common in British slang. 'Jack-o'-lantern' is strongly associated with American Halloween culture.
Connotations
Informal uses like 'jack up' (raise prices) or 'jack of all trades' are similar. 'Union Jack' is the UK's national flag.
Frequency
Both varieties use the term frequently, with similar core frequencies for tool and name senses.
Vocabulary
Collocations
Grammar
Valency Patterns
jack something upjack into somethingjack it inVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “jack of all trades, master of none”
- “hit the jackpot”
- “you don't know jack”
- “every man jack”
Usage
Context Usage
Business
"They decided to jack up the prices due to increased costs."
Academic
Used in engineering contexts (e.g., hydraulic jack) or historical contexts (e.g., jack tar for a sailor).
Everyday
"Can you pass me the jack to change the tyre?" "His name's Jack."
Technical
In electronics: '3.5mm audio jack'. In mechanics: 'bottle jack', 'scissor jack'.
Examples
By Part of Speech
verb
British English
- He decided to jack in his job.
- We need to jack the car up carefully.
American English
- They jacked up the interest rates.
- He jacked the truck to change the flat.
adjective
British English
- It's a jack socket.
- The jack plug is faulty.
American English
- It's a phone jack.
- The audio jack input is on the side.
Examples
By CEFR Level
- Jack is my friend.
- The car has a jack in the boot.
- We saw the Union Jack.
- I used a jack to lift the car and change the wheel.
- Plug the headphones into the jack.
- He's a real jack of all trades.
- The government has been accused of jacking up taxes unfairly.
- The mechanic deftly jacked the vehicle onto the axle stands.
- All the jacks, queens, and kings were face cards.
- The company decided to jack in the unprofitable venture.
- The novel's protagonist, every man jack of them, faced the same dilemma.
- A hydraulic jack provides significantly greater lifting force than a mechanical screw jack.
Learning
Memory Aids
Mnemonic
JACK LIFTS: Just A Car Kit for Lifting It From The Side. Think of a car jack.
Conceptual Metaphor
A JACK IS A MAN (male figure, e.g., jack in cards). A JACK IS A SUPPORT/HELPER (tool).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate the name 'Jack' as 'Джек' when it refers to a tool (e.g., домкрат).
- Avoid confusing 'jack' (домкрат) with 'hijack' (угонять).
- The idiom 'jack of all trades' is мастер на все руки, not a literal translation.
Common Mistakes
- Incorrect: *'I need a jack for my headphones.' (Context: You need a jack plug/socket.) Correct: 'I need a jack plug.'
- Incorrect: *'He is a jack.' (meaning a labourer). Correct: 'He is a lumberjack.' or 'He is a jack tar.' (archaic).
Practice
Quiz
In the idiom 'jack of all trades', what does 'jack' metaphorically represent?
FAQ
Frequently Asked Questions
No, it has many meanings including a name, a playing card, a sailor (archaic), and a verb meaning to lift.
'Hijack' means to seize control illegally (e.g., a plane), while 'jack' alone does not have this meaning. They are different words.
Yes, commonly as 'to jack something up' (to lift it) or informally 'to jack something in' (to stop doing it, chiefly UK).
The term 'jack' historically referred to a small flag flown on a ship. The 'Union Jack' is the union of the crosses of St George, St Andrew, and St Patrick.