Found one definition

  1.                 From WordNet dictionary, version 3.0:
                    

    manioc n. 1. a starch made by leaching and drying the root of the cassava plant; the source of tapioca; a staple food in the tropics Synonyms: cassava, cassava starch, manioca 2. cassava root eaten as a staple food after drying and leaching; source of tapioca Synonyms: cassava 3. cassava with long tuberous edible roots and soft brittle stems; used especially to make cassiri (an intoxicating drink) and tapioca Synonyms: bitter cassava, mandioc, mandioca, tapioca plant, gari, Manihot esculenta, Manihot utilissima