Meaning & use
jack
Last updated
A portable device used to lift a heavy object, such as a car, off the ground.
See it in a sentence
He used a jack to lift the car so he could change the flat tire.
The mechanic keeps a hydraulic jack in the back of his truck.
A note on using this word
Jack has many unrelated meanings in English, including a socket for an electrical plug (a headphone jack) and a playing card; context determines which sense is meant.
Words with a similar meaning
lifthoist
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. noun
A socket into which an electrical plug is inserted, such as a headphone jack.
She plugged her headphones into the jack on the side of the laptop.
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