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Background:The word came about when somebody noticed that some college students were "hacking" away on they're keyboards.

1.A person who knows very much about certain operating systems. They usually use exploits, or glitches in the systems to get in, but sometimes will socially engineer somebody else into giving them access.

A hacker feels the need to explore, and more often then not, the need to be better then everybody else. (thus the phrase "f33r my 1337 ski115")

The peak of an exploration is when the hacker obtains super-user status, which means they have access to everything on the computer.

2.Somebody who uses their programming knowledge to change and alter computer programs to do what the want. See cracker.
Jimmy hacked a server in Japan and got super-user status.
by zeu5 July 23, 2004
1. a taxi driver

2. a sloppy or inefficient computer programmer

3. someone who breaks into a computer electronically
The some of the computer worms left computers open to hackers and other worms.
by Light Joker February 09, 2005
A person or persons who are unclean, dirty, let their dogs shit everywhere without cleaning it up, leave dirty rubbish outside their door for days to fester and their home smells of shit.

my neighbours laura and Jason are hackers
by toot toot July 21, 2006
Someone with poor or undeveloped skills. Often mistakenly used to describe criminals (computer "hackers" broke into the mainframe).
By shooting 123 on the front nine, Julio proved to be a true "hacker" on the putt-putt course.
by Yul June 04, 2003
According to CAL, a hacker is someone who is skilled at Day of Defeat.
Look boys and girls, 0xossi is a hacker!
by Schmiggs June 17, 2003
someone who lives in there basement eating cold hard pizza.
my brother is a hacker he is so nerdish
by r-Z October 21, 2004
Someone who shows little regard to mathematics, science, formulated reasoning or careful approach when developing computer software.
"The software was written by a hacker and consequently, needs to be patched all the time".
by qwertyuisean June 03, 2006