Read the dictionary definition of cassava. All definitions for this word.
1. any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch
2. cassava root eaten as a staple food after drying and leaching; source of tapioca
3. a starch made by leaching and drying the root of the cassava plant; the source of tapioca; a staple food in the tropics