the most active, committed, or strict members of a group or movement

the party still has a hard core of supporters that will always vote for them

pornography of a very explicit or extreme kind

popular music that is experimental in nature and typically characterized by high volume and aggressive presentation

broken bricks, rubble, or similar solid material used as a filling or foundation in building

highly committed in one's support for or dedication to something

hardcore gamers

even hardcore fans of the television series should probably skip this

denoting or relating to pornography of a very explicit or extreme kind

online hardcore porn

denoting or relating to a type of experimental popular music that is typically characterized by high volume and aggressive presentation

hardcore punk