Definition: rock music with deliberately offensive lyrics expressing anger and social alienation; in part a reaction against progressive rock
Similar words: rock, rock 'n' roll, rock and roll, rock music, rock'n'roll, rock-and-roll
Definition: a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western
Usage: rock is a generic term for the range of styles that evolved out of rock'n'roll.