Did you mean hardcore?
hardcore
adjective
°Having an extreme dedication to a certain activity; diehard.
"He's a hardcore gamer."
°(slang) Particularly intense; thrillingly dangerous or erratic; desirably violent in appearance; pleasing or "cool" due to intensity or danger.
"That show was hardcore, dude."
noun
°broken bricks, stone and/or other aggregate used as foundations especially in road and path laying.
°(music) Hardcore punk or techno music.