HARDCORE

Noun. 1. Explicit pornography.2. A fast 'techno'/'rave' hybrid music, usually not having the subtleties of 'house' music.3. A variety of 'punk' rock, characterized by its extremes. Adj. Something that is of an extreme, committed nature, such as any of the above descriptions for the noun. An obsessive follower of a band, for example, may be called a hardcore fan.