anything characterized by abrupt and extreme changes (especially up and down)
elevated railway in an amusement park (usually with sharp curves and steep inclines)
a resident of a coastal area
a covering (plate or mat) that protects the surface of a table (i.e., from the condensation on a cold glass or bottle)
a grounder that rolls along the infield
a long heavy sea wave as it advances towards the shore
a small wheel without spokes (as on a roller skate)
a cylinder that revolves
pigeon that executes backward somersaults in flight or on the ground
