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2.
1) When at a hardcore/metalcore show someone hardcore dances along the the boarder of the mosh pit with the intent of hitting the crowd. Crowd killers apparently believe that it is not hardcore to not participate in dancing when at hardcore shows. Ironically crowd killer toughness is questionable (it would be socially unnacceptable for a member of the crowd who hasn't been hardcore dancing to begin throwing kicks, punches, ect. in defense when approached by crowd killers) as they frequently hit unsuspecting crowd members who (if aware of the strike) in the context of one on one (in some cases) could stand their ground and drop that sucka. Crowd killers (as they can be called?) often target who they plan to hit and typically go after "emo kids" and/or "scene kids".

2) When a pseudo tough-guy with an ego complex punches a member of the crowd in the face (often as a sucka-punch)because it makes him feel like a man.
Billy: During the call for blood breakdown that jock hit that unsuspecting hardcore kid so hard I could hear the pop over the intensely loud chugga chuggas.
Suzie: Sweet crowd kill?
Billy: Yah. Johnny weightlifter wasn't fucking around.
by xpurexhxc January 14, 2007
 
1.
Verb

1) When at a hardcore/metalcore show someone hardcore dances along the the boarder of the mosh pit with the intent of hitting the crowd. Crowd killers apparently believe that it is not hardcore to not participate in dancing when at hardcore shows. Ironically crowd killer toughness is questionable (it would be socially unnacceptable for a member of the crowd who hasn't been hardcore dancing to begin throwing kicks, punches, ect. in defense when approached by crowd killers) as they frequently hit unsuspecting crowd members who (if aware of the strike) in the context of one on one (in some cases) could stand their ground and drop that sucka. Crowd killers (as they can be called?) often target who they plan to hit and typically go after "emo kids" and/or "scene kids".

2) When a pseudo tough-guy with an ego complex punches a member of the crowd in the face (often as a sucka-punch)because it makes him feel like a man.
Billy: During the breakdown that jock hit that unsuspecting hardcore kid so hard I could hear the pop over the intensely loud chugga chuggas.
Suzie: Sweet crowd kill?
Billy: Yah. Johnny weightlifter wasn't fucking around.
by James John Smith January 12, 2007
 
3.
when standing at the edge of a mosh pit, throwing your arms back and swinging at the little loser kids standing around wishing they had the initiative or the balls to throw down.
geoff: hey billy, you go crowd kill those little posers while i throw down
billy: deal.
by blessedxcore May 15, 2006
 
4.
When hardcore dancing, crowd killing consists of beating the crap out of the crowd. Spin kicks along the edge of the pit, crowd punching, just hitting random kids in the face. It's all good. Oh yeah and when I talk about hardcore dancing I'm not talking about this pussy scene kid, girl pants wearing, norma jean fag flailing around. I am talking about dancing hard to good hardcore. It's all about the old school and tough guy hardcore baby. I go to shows to beat the crap out of those kids.

TRUE TIL DEATH
xJHUNTx
FSU is all about the crowd kill, punching kids in the face is great.
by xJHUNTx December 07, 2005