hip hop slang:
1) To have sexual intercourse. "Your aim is to bone" -- A Tribe Called Quest.
2) Penis. "You can act like a doggy, and play with my bone" -- Skooly D.
3) One dollar.
4) Core, soul. "I'm a rock hard trooper to the bone" --Public Enemy
5) A joint. "Smokin' bones in the staircase" -- Wu-Tang Clan