Definition of rock-based in US English:

rock-based

adjective

  • Having a base of or on rock.

adjective

  • Having a basis in rock music; inspired by rock music.

Origin

Early 19th century; earliest use found in Charles Robert Maturin (1780–1824), writer and Church of England clergyman. From rock + based<br>1960s; earliest use found in The New York Times. From rock + based.