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1.
a person who is a professional at doing some sort of service, but does crappy work.
man, that tattoo shop is full of hacks.

kyle from scv is a hack at installing stereo equipment.
by wastinmoola January 24, 2004
 
2.
a clever solution to a tricky problem
to hack is to mod or change something in an extrodinary way
by z-trip April 25, 2009
 
3.
A political appointed flunky who either doesn't want to work or who is so stupid they can't work
That new Assistant Commissioner Martha appointed is a real hack.
by Phakebox August 08, 2005
 
4.
All the definitions here plus:
As an acronymn for Horses Ass Carrying Keys. Prison slang referring to a prison guard.
Put your pig sticker away. The HACK is coming!
by Dohmnuill December 30, 2004
 
5.
A popular way to catch a ride in more so the NorthEastern side of the nation, in large innercities of high concentration. The person usually stands on the road and says something to the effect "Yo, you got me on a hack, 'round there to a nearby location?" to the driver of the car.

If accepted the driver becomes a temporary cab driver, and usually the hackee is suppposed to give directions, although they are usually trying to be cool, and just point like some dumbasses.

At the completion you give the driver like a small bill like a $5 or $10.

As I said popular in the New York, Philidelphia, and Baltimore regions of innercities. No offense but usally ghettos.
Yo, let me get a hack.
Where ya goin?
Up da block.
A'ight. You gotta gimme Seven tho'. I need me a sandwhich bra'
Aigh't
by Siguro ka ba? April 12, 2006
 
6.
An event that is unexpected and favors a particular person especially in competetion. Also, when some one uses a video game glitch, expolit or trainer to give them an advatage
i won a million dollars in the lotto

hacks

(in video games)
he is shooting backwards

hacks

by tony45940 November 28, 2006
 
7.
1.) Short name used for "hacky sack"
2.) The goal achieved when every player within a "hack circle" kicks the hacky sack at least once without letting it touch the ground.
3.) Someone who copies, mimics, or deliberately impersonates other people, or other peoples accomplishments in search of praise.
4.) To infiltrate, destroy, reconfigure, or violate any sort of computer program, website, etc. through use of coding.
5.) To stab, slash, cut, lacerate, etc. repetitively until the object or objects are in multiple pieces.
1.) "Dude, pass me the hack."
2.) "JOHN YOU SUCK!! We almost had a hack!"
3.) "Man...Jimmy is such a hack."
4.) "I'm gonna hack the hell out of that site."
5.) "Whoah, he hacked that thing to hell."
by Saint March 06, 2005