: any of several American plants (genus Manihot, especially M. esculenta) of the spurge family grown in the tropics for their edible tuberous roots which yield a nutritious starch
also
: the root
called also mandioca, manioc, yuca, yucca
compare tapioca sense 1Note: Since raw cassava contains glycosides which release cyanide when crushed, the leaves and roots must be soaked, cooked, or fermented before consumption to prevent poisoning.
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Merriam-Webster unabridged
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