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in the music sense, a form of underground music that takes music to extremes. started in the early 80`s with bands like minor threat and black flag. i like to call this classic hardcore. then in the late 80`s there were many hardline, "positive" straightedge bands like chain of strength and gorilla biscuits. i like to call this oldchool hardcore. then in the early 90`s straigtedge became rediculous, and the bands got more metallic, with bands like Earth Crisis and Strife. I just call this hardcore. Then all throughout the 90s there were those hardcore bands with the scary, grindy sound, like converge, dillenger escape plan, or discordence axis. Then there were some bands like 10 yard fight who tried to re-create the hardcore sound of the late 80`s, a few were ok but most really sucked. This developed into what some people call "posi" hardcore. These days, you have your choice of shitty mosh hardcore, or screamo, or emo-core. Now hardcore is just a melting pot of all the sounds in one. its one big emotional, positive/negative, noisy vomit. its ok i guess. i liked how it was better in the late 90s early 00s.
quality hardcore bands: converge, bane, shai hulud, american nightmare, minor threat, gorilla biscuits, ten yard fight, joshua fit for battle, the now, 18 visions, forstella ford, hot cross, pg.99, discordence axis
by mike December 24, 2003
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Someone who rides their bike all the way to the store just to get a can of Special Pepsi.
by Dr Meezy December 14, 2010
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A more extreme version of a dare. Rules:

1. You can't turn down a hardcore. It's just unacceptable.

2. You can't overuse a hardcore. It must be reserved for very special occasions.

3. You can't hardcore someone to do something that you yourself would not do, i.e. you can't hardcore someone to jump off a nine-story building.
If you were hardcore, you would walk up to that guy over there and tell him you saw his picture in the dictionary next to "sexy."
by Shannon L.W. December 30, 2005
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Extreme. Usually followed by the word porn. Hardcore porn is extremely explicit, graphic pornography.
by Greasy_Wog_Dude March 25, 2005
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Type of punk rock that relies on heavy, rapid-fire delivery.
The Dead Kennedy's IN GOD WE TRUST, INC. EP relies mostly on old hardcore riffs rather than the snazzy hooks the band is best known for.
by Sooper! June 09, 2002
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