rhubarb

rhu·barb

noun \ˈrü-ˌbärb\

Definition of RHUBARB

1

: any of several plants of the genus Rheum having large leaves with thick succulent petioles often used as food

2

: the dried rhizome and roots of any of several rhubarbs (especially Rheum officinale and R. palmatum) grown in China and Tibet and used as a purgative and stomachic