[ˈrɒkə], (Noun)

Definitions:
- a person who performs, dances to, or enjoys rock music
(e.g: a punk rocker)

- a rocking device forming part of a mechanism, especially one for controlling the positions of brushes in a dynamo

- a curved bar or similar support on which something such as a chair or cradle can rock

- the amount of curvature in the longitudinal contour of a boat or surfboard
(e.g: the hull lines are classic with considerable rocker)


Phrases:
- off one's rocker

Origin: