Manioc n. : The tropical plants (Manihot utilissima, and M. Aipi), from which cassava and tapioca are prepared; also, cassava.

Example:
What are some of the South American groups that rely on Manioc as a major food resource?

Taxonomy
cassava, cassava root, chips, Manihot esculenta, cassava flour, flour, the roots, tonnes, plant, bitter cassava, Yuca, Togo, the leaves, cassava production, food, cassava plant, manioc, tubers.

Defination from the web:
manioc) is a woody shrub of the Euphorbiaceae (spurge family) native to South America ... Tapioca is an essentially flavourless starchy ingredient, or fecula, produced from treated and dried cassava (manioc) root and used in cooking. ...