American Dictionary

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Definition jack in American English

jack noun

noun
/dʒæk/
1

a piece of equipment used for lifting and supporting a heavy object, for example a car when you are changing a tire

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2

a type of electrical plug that fits into a socket with one hole

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2.1

a socket that a jack fits into

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3

a playing card that has a picture of a young man on it and is worth more than a ten and less than a queen

Example

the jack of diamonds

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4

anything or nothing at all

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6

a small white ball that you roll larger balls toward in the game of lawn-bowling

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Definition jack in American English