TAPIOCA
tapioca
(noun) granular preparation of cassava starch used to thicken especially puddings
Source: WordNet® 3.1
Etymology
Noun
tapioca (countable and uncountable, plural tapiocas)
A starchy food made from the cassava plant, used in puddings.
Source: Wiktionary
Tap`i*o"ca, n. Etym: [Braz. tapioka: cf. Pg., Sp. & F. tapioca.]
Definition: A coarsely granular substance obtained by heating, and thus
partly changing, the moistened starch obtained from the roots of the
cassava. It is much used in puddings and as a thickening for soups.
See Cassava.
Source: Webster’s Unabridged Dictionary 1913 Edition