noun
1. obsolete : a coral like a plant
2.
a. : a much-cultivated East Indian plant ( Jatropha multifida ) with showy scarlet flowers and deeply incised leaves
b. : any plant of the genus Erythrina (especially E. corallodendron )
c. : an essentially leafless Mexican shrub ( Russelia equisetiformis ) like a rush with bright-red flowers — called also coral blow