The cassava, a plant of the spurge family, provides a large proportion of the staple diet of the native peoples of South America. It has a large starchy root which is eaten as a vegetable (and is also, incidentally, the source of tapioca). The word cassava comes via French cassave from casavi, the name of the plant in the Taino language of Haiti. (An alternative term is manioc or manioca, which comes from Tupi mandioca.)
Subjects: Medicine and Health.