View your list of saved words. (You can log in using Facebook.)
Senna (Cassia didymobotrya).—Gerald Cubitt
Any of several plants, especially of the genus Cassia, in the pea family (seelegume), mostly of subtropical and tropical regions. Many are used medicinally; some yield tanbark used in preparing leather. Some sennas are among the showiest flowering trees. In the eastern U.S., wild sennas (C. hebecarpa and C. marilandica) grow up to 4 ft (1.25 m) high and have showy spikes of yellow flowers. Some species are Old World shrubs or small trees.
This entry comes from Encyclopædia Britannica Concise. For the full entry on senna, visit Britannica.com.