An example of jack is above the ten card and below the queen in points.
An example of jack is what you would use to lift your car to change a flat tire.
You haven't done jack. Get up and get this room cleaned up right now!
You don't know jack about that.
Hunters illegally jacking deer.
Hydraulic jack, automobile jack.
Every man jack.
- A device to pull off boots.
- A sawhorse or sawbuck.
- A machine for turning a spit; a smokejack.
- (mining) A wooden wedge for separating rocks rent by blasting.
- A grating to separate and guide the threads in a warping machine; a heck box.
- A machine for twisting the sliver as it leaves the carding machine.
- A compact, portable machine for planing metal.
- A machine for slicking or pebbling leather.
- A system of gearing driven by a horse power, for multiplying speed.
- A hood or other device placed over a chimney or vent pipe, to prevent a back draught.
- In hunting, the pan or frame holding the fuel of the torch used to attract game at night; also, the light itself.
- (nautical) A bar of iron athwart ships at a topgallant masthead, to support a royal mast, and give spread to the royal shrouds; also called jack crosstree.
He jacked the car up so that he could replace the brake pads.
- every man; everyone
- to spend time in useless activity
- to trifle or meddle (with)
- to harass, treat with contempt, etc.
- to masturbate
- to raise by means of a jack
- to raise (prices, salaries, etc.)
Origin of jack
- see jack
From Webster's New World College Dictionary, 5th Edition
- From the name Jack from Middle English Jakke possibly from Old French Jacques from Late Latin Iacōbus Jacob N., sense 15, short for jack shit V. tr., senses 4a and b, short for hijack
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English jakke (“any mechanical device”), from the name Jack, from Old French Jacques
- From the common name above.