Englishfor English speakers
jack
Noun
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A jack is a machine for lifting heavy thing. Often a jack is used to lift a car for fixing.
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A jack is a plug or connector for electronics.
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A jack is a flag used at by ships at sea.
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Another word for nothing.
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A jack is a playing card with a J on it.
jack
Verb
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To use a jack.
He jacked the car up so that he could replace the brake pads.
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To steal.
Someone jacked my car last night!
Jack
Proper noun
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Jack is a male given name.
in
Preposition
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Used to show that something is inside something else.
The cat is in the box.
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Used to show that someone is at home, or is available.
Is John in?
The Doctor is now in.
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Used to show movement towards the inside.
The rain came in through the window.