rock-based1
/ˌrɒkˈbeɪst/ /ˈrɒkbeɪst/adjective
Having a base of or on rock.
Origin
Early 19th century; earliest use found in Charles Robert Maturin (1780–1824), writer and Church of England clergyman. From rock + based.
rock-based2
/ˌrɒkˈbeɪst/ /ˈrɒkbeɪst/adjective
Having a basis in rock music; inspired by rock music.
Origin
1960s; earliest use found in The New York Times. From rock + based.