noun

• a five pound note. Origin: Cokney rhyming slang - Jack's alive.

  by D. Fisher, London, Greater London, UK, Jun 01 1997.

• nothing, very little.

  You don't know jack!

  by Sue Clark, St Louis, MO, USA, Oct 27 1997.

• a sweet, sensitive, adorable guy. Origin: Jack Dawson, the main male character in the movie Titanic.

  He's a real Jack.

  by Anonymous, Feb 19 1998.

• a cigarette.

  Hey, could I get a jack?

  by Aubrey Harrington, MD, USA, May 19 1998.

• a police officer.

  The jacks pulled me over for no reason.

  by Jason W., Melbourne, VIC, Australia, Jul 30 1998.

• shortened form of jack-ass or a jack-off - a general insult.

  He's a dumb jack!

  by Lindsay F., OH, USA, Nov 09 1998.

verb

• to stab.

  He got jacked.

  by Karl Bartolome, Toronto, ON, Canada, Jun 06 1997.

• to punch.

  He got jacked in the face.

  by Karl Bartolome, Toronto, ON, Canada, Jun 06 1997.

• to steal.

  I bet they jacked that watch.

  My car got jacked.

  by Karl Bartolome, Toronto, ON, Canada, Jun 06 1997.

verb

• to break or ruin.

  You really jacked his car up!

  by Karl Bartolome, Oct 27 1997.

• to stab or attack.

  He got into a fight and got all jacked up.

  by Karl Bartolome, Oct 27 1997.

noun

• acronym of "orange juice." A popular fruit beverage.

  I'm thirsty. You got any OJ?

  by Chris D., Kinston, NC, USA, Nov 19 1998.

verb

• to kill via stabbing. Origin: the double murder trial of football star O.J. Simpson.

  Go ahead, OJ them.

  by Shlakeski Marinko, Oct 17 1997.