(transitive, slang, baseball) To hit (the ball) hard; especially, to hit (the ball) out of the field, producing a home run.

(chiefly capitalized) A name applied to a hypothetical or typical man. / (countable, now chiefly US) A man, a fellow; a typical man; men in general. / (colloquial) A sailor.

(Australia) Tired, disillusioned; fed up (with).

(transitive, idiomatic, Britain) To stop doing a regular activity. Often a job or studies.

(colloquial) A street robbery.

present participle of jack

(slang) simple past tense and past participle of jack (stole)

(slang) High on drugs or stimulants. / (slang) Broken, imperfect, especially when followed by 'up'. (See jacked up) / (slang) Strong and/or muscled.

A male given name from Hebrew, also used as a pet form of John. / A surname. / (colloquial) Jack Daniel's, a brand of Tennessee whiskey.

(informal) A placeholder or conventional name for any man, particularly a younger, lower-class man. / (informal, archaic) Ellipsis of Jack Tar., a sailor.