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7.
A variety of punk rock originating in the US in the early '80s. It involves shouted vocals (as opposed to growled) with a fast, aggressive tempo and a guitar sound featuring quick chord changes. Minor Threat, Bad Brains, SSD, and the Circle Jerks are known for this style. By 1986, a new style of hardcore came out of the New York scene. The NYHC scene added mosh breakdowns to mix, but the music retained its fast aggressive nature. This spawned the youth crew scene, a positive straight edge scene featuring such bands as Youth of Today, Chain of Strength, and the Gorilla Biscuits. Judge is a notable band from this era that added some metal style to their riffs. In the 90s hardcore took many different direction, bands like Lifetime and Turning Point took the late '80s sound (particularly the melodic approach pioneered by the Gorilla Biscuits) and added a softer sung vocals and the lyrical approach of DC bands like the Rites of Spring and Dag Nasty. Other bands like Earth Crisis mixed hardcore with death metal growls and slow brutal guitars. Today many bands continue to play the early '80s fast, thrashy style as well as the so-called '88 or youth crew style, while still others have taken the sound of bands like Earth Crisis farther and mixed in more metal elements such as double bass drumming. Hardcore refers to all of these styles, though metalcore is best used to identify bands like Throwdown or Converge (who don't really sound anything alike but both mix metal and hardcore). Finally, some bands like Bane, With Honor, and Comeback Kid are mixing positive youth crew style hardcore with more complex metal riffing without straying into the beatdown, double bass drumming style of metalcore. People talking about old-school hardcore should be referring to one of the hardcore sounds that developed in the '80s, regardless of when the band formed.
early '80s: Minor Threat, Government Issue, Black Flag, SSD, Jerry's Kids, Youth Brigade, Bad Brains, Agnostic Front, JFA

late '80s/'88 style: Youth of Today, Cro-Mags, Uniform Choice, Chain of Strength, Bold, Gorilla Biscuits, early Turning Point

emo-influenced hardcore: Lifetime, Falling Forward, later Turning Point

early metalcore: Earth Crisis, Strife

modern metalcore: Throwdown, Unearth, Adamantium, Converge

modern youth crew/old-school bands: Ten Yard Fight, In My Eyes, Champion, Give Up the Ghost (formerly called American Nightmare), Black Sheep Squadron, the Spark, Trial

by Robert Murdoch August 13, 2006
 
85.
pretending that something is the dogs bollocks when really it isn't
man that little kid is a hard core skater
by souch13 May 18, 2005
 
86.
used to diss an act/person/object considered cool by a certain sub-culture - considered rather pitiful by outsiders
those unemployed/uneducated rudeniks driving up and down outside the college trying to pick up high-school girls are so hardcore
by tink May 03, 2004
 
87.
Having, or of that which has, a hard center.
rezzix you are such a *HARDCORE* moron! Your used this word as an adjective and yet gave the definition of a noun. I think you've been reading the Urban Dictionary too much!
by shaNker January 16, 2003
 
88.
too tough to be emo

emo

can be positive or negative depending on whether or not you are a self absorbed terd who likes to show off you hardcoreness

in this case you might be a douchebag

douchebag
i used to get picked on a lot, but i started listening to my chemical romance and now im hardcore
by xsonicassassinx October 10, 2005
 
89.
a mix of metal and punk rock. this style of hard rock stared genres and fads like emocore and scene. hard core lyrics range from political (suicide machines), to emo (from autumn to ashes), to christian (underoath).
as i lay dying, unearth, underoath, rise against, suicide machines, bullet for my valentine, rancid, slipknot <these are hardcore bands>
by hot emo kid August 18, 2006
 
90.
Working all day and smoking all night for several days in succession.
Oh dear. Hard core all week = barnsley syndrome
by oracle March 12, 2004
 
91.
punk rockin, leather strap wearin, mosh pittin extremists
i feel so hard core with steel-toes on.
by Leya Fish January 19, 2003