1. A plant of the genus rheum, whose roots are medicinal, and whose leaf-stalks, which contain a mixture of citric and malie acids, arc used for making tarts, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• rubard,
• rhubard,
• rubbarb,
• thubarb,
• rubarb,
• rhurbarb,
• subarb,
• rhubab,
• ruhbarb,
• rhubhus,
• ehubarb,
• rhhubarb,
• rhubrb,
• rhubar,
• rhuabrb,
• rhubrab,
• rhubbarb,
• rhubarrb,
• Shubart,
• chukarz

The adjective form of the word "rhubarb" is "rhubarb" itself.

The plural of the "rhubarb" can be the "rhubarbs".

The singular of the "rhubarb" can be the "rhubarb".