■ noun
1》 a person who performs, dances to, or enjoys rock music.
↘a rock song.
↘ Brit. a young person, especially in the 1960s, belonging to a subculture characterized by leather clothing, riding motorcycles, and a liking for rock music.
2》 a rocking chair.
3》 a curved bar or similar support on which something such as a chair can rock.
↘a rocking device forming part of a mechanism.
4》 the amount of curvature in the longitudinal contour of a boat or surfboard.
Phrases
off one's ~ informal mad.