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jack

From Wiktionary

See alsoJack

(countable) Ajack is amachine for lifting heavy thing. Often ajack is used to lift acar for fixing.
(countable) Ajack is aplug orconnector forelectronics.
(countable) Ajack is aflag used at byships atsea.
(uncountable)(slang) Another word fornothing.
(countable) Ajack is a playingcard with aJ on it.

Plain form
jack

Third-person singular
jacks

Past tense
jacked

Past participle
jacked

Present participle
jacking

(transitive) To use ajack.
Hejacked the car up so that he could replace the brake pads.
(transitive) To steal.
Someonejacked my car last night!