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1. noun, slang Money. It would take a lot of jack to get an operation like that off the ground.
2. noun, slang A small, trifling, or worthless amount. Now, I know jack about computers, so you'll really have to help me fix this issue. We didn't learn jack from their presentation.
3. noun, dated slang A detective. A couple of jacks came snooping around here yesterday.
4. verb, slang To steal something. The thieve jacked a bunch of high-end consumer electronics. I didn't have enough money for the magazine, so I decided just to jack it.
5. verb, slang To rob, cheat, or deceive someone. These big companies are only interested in jacking their customers to make as much money as possible. He spent most of his teen years jacking people in the street.
1. To waste or pass time idly, as by doing nothing or engaging in foolish behavior. Stop jacking around and start cleaning this place up—my parents will be home soon! The final product is so shoddy. It's like the development team spent the whole time jacking around instead of actually working on it!
2. To tinker or fiddle (with something). He's been out jacking around with that engine for days now, but I know he'll never get it working again. My dad liked to jack around with old electronics that he picked up at flea markets.
3. To tease someone, often by trying to convince them of something untrue. In this usage, a noun or pronoun can be used between "jack" and "around." Quit jacking me around, I know there isn't a Hollywood director calling me right now. The older members of staff like to jack around the new team members when they join the company.
4. To waste someone's time, often by being evasive, indirect, or insincere. In this usage, a noun or pronoun can be used between "jack" and "around." I don't understand why they didn't just tell me "no" right away. Instead, they jacked me around for three weeks when I could have been looking for other jobs. The company is being accused of jacking around customers who are requesting refunds for faulty products.
1. To quit or abandon (something), especially a career, endeavor, or enterprise. A noun or pronoun can be used between "jack" and "in." Primarily heard in UK. We're going to have to jack this project in if we can't secure more funding. After two years, Janet was ready to jack in her job at the firm.
2. To insert an electronic device or component (into something else) in order to form a connection. A noun or pronoun can be used between "jack" and "in." The new design means you can no longer jack in your headphones to the phone itself. You'll need an expensive adapter if you want to do that. You can jack up to three USB devices in at once along the side of the computer.
3. To interface one's brain with a computer system. Usually used in science fiction. The only way to access the mainframe is to jack in and manipulate the code from the inside. The café operates as a front for an illegal tech den where trans-humans jack in to live second lives in a virtual world.
jack into (something)
1. To be able to plug into an electrical device in order to form a connection. The new design means traditional headphones no longer jack into the phone itself. You'll need an expensive adapter if you want to do that. Up to four USB devices can jack into the computer simultaneously.
2. To insert an electronic device or component into something else. A noun or pronoun can be used between "jack" and "into." I jacked a Bluetooth transmitter into the stereo so I could listen to it on my wireless headphones. I thought I'd be able to jack my mouse and keyboard into the new video game console, but apparently that doesn't work.
3. To interface directly with a computer system using one's central nervous system. Usually used in science fiction. We'll have to jack into mainframe to get past the security system from the inside. The café operates as a front for an illegal tech den where trans-humans jack into a virtual world where anything is possible.
4. To connect one's brain to a computer system, or vice versa. A noun or pronoun can be used between "jack" and "into." We should be able to jack the new augmentation directly into your brain. Sarah will be able to jack you into the company database if you are able to find a computer with Level 5 Authorization.
vulgar slang To masturbate. Used especially in reference to a man.
1. vulgar slang To masturbate or bring someone to orgasm with one's hands. Said especially of a male.
2. rude slang To waste or pass time idly or by doing nothing or engaging in foolish behavior. Would you quit jackin' off and help me move this sofa out to the truck?
1. To increase sharply. Please stop jacking up the volume on the TV. I can barely hear myself think.
2. To raise something through the use of a jack, a simple machine used to lift things. We'll need to jack up the car before we can change this tire.
3. To stimulate, excite, or motivate, often but not always through the use of drugs. In this usage, a noun or pronoun is sometimes used between "jack" and "up." By the way he was flitting around, you could tell the guy was jacked up on something. This soundtrack jacks me up so much when I'm working out.
4. To inflict damage upon, physically or otherwise. In this usage, a noun or pronoun is sometimes used between "jack" and "up." Yikes, that car wash really jacked up your car's exterior. I'm not going to lie, that horror movie jacked me up for weeks.
slang Primarily heard in UK.
1. Extremely excited, enthusiastic, or motivated. Everyone at the company is really jacked to show the world what we've been working on for the last three years. The coach got the team jacked up ahead of the big championship game.
2. Having very large and well-defined muscles. Tom used to be a skinny little dude, but he spent the summer getting jacked. With my simple workout routine, you won't need expensive supplements or endless time at the gym to be totally jacked up!
See also: jacked
slang Having very large and well-defined muscles. (Hyphenated if used before a noun.) Tom used to be a skinny little dude, but he spent the summer getting jacked out. With my simple workout routine, you won't need expensive supplements or endless time at the gym to be totally jacked out! The film is filled with jacked-out dudes and buxom ladies.
jacked up on (something)
Made extremely excited, energetic, jumpy, or enthusiastic by something. In college, I used to spend many a night jacked up on caffeine writing terms papers or studying for exams at the last minute. If you want to see craziness, trying spending an afternoon with a bunch of kids jacked up on cake, candy, and soda.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
jack aroundand jerk around
sl. to waste time. Stop jacking around and get some work done! The kids spend most of the day jerking around.
jack someone aroundand jerk someone around
Sl. to give someone a difficult time; to harass someone. Come on! Stop jacking me around! Max started jerking Lefty around, and it looked as if there was going to be trouble. You jack around everyone you know!
jack someone up
1. Sl. to excite or stimulate someone, possibly with drugs. Tom jacked up his buddy by talking to him. Tom jacked up Fred with a lot of encouragement.
2. Sl. to motivate someone; to stimulate someone to do something. The mail is late again today. We'll have to jack those people up at the post office. I guess I'll have to jack up the carpenter again to repair my stairs.
jack something up
1. Lit. to raise something up on a mechanical lifting device. Now I have to jack the car up, so I can change the tire. Please jack up the car.
2. Fig. to raise the price of something. The store keeps jacking prices up. The grocery store jacked up the prices again last night.
Sl. angry; annoyed. Boy was that old guy jacked out at you. Yup, he was jacked all right.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Raise or increase, as in The cartel is jacking up oil prices again. This term alludes to the literal meaning of jack up, that is, "hoist with a jack." [Colloquial; c. 1900]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
v. Vulgar Slang
To masturbate. Used chiefly of males.
1. To lift something, especially a vehicle, using a jack: We jacked up the car to change the tire. I hurt my arm when I jacked the van up.
2. To raise some price or value by increments: Because of the drought, the stores jacked up the price of lettuce. That candidate is going to jack taxes up after the election.
3. To stimulate someone with or as if with a drug: My friend jacked me up on caffeine the night before exams. The coach jacked up the team with a pep talk before the game.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See beat off
1. n. money. I don’t have the jack for a deal like that.
2. n. tobacco for rolling cigarettes. You got some jack I can bum?
3. n. nothing. (Probably from jack-shit.) Your last idea wasn’t worth jack. Do I pay you to come up with stuff that bad?
4. n. a strange person; an annoying person. (Possibly from jackass or jack-shit.) Willy, stop acting like such a jack!
5. tv. to steal something. I didn’t buy it, I jacked it!
in. to waste time; to mess around. (Akin to jack off.) Stop jacking around and get busy.
mod. angry; annoyed. Boy was that old guy jacked out at you.
See jacked out
1. and jacked mod. excited. I was so jacked I almost passed out. Don was really jacked up about the election.
2. mod. arrested. (Underworld.) What time did Sam get himself jacked up?
3. mod. upset; stressed. I was really jacked up by the bad news.
4. mod. high on drugs. He’s jacked up, and he may have ODed.
See jacked up
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.