See under tapioca.
a food substance prepared from cassava in granular, flake, pellet (pearl tapioca), or flour form, used in puddings, as a thickener, etc.
Origin of tapioca
1605–15; < Portuguese < Tupi tipioca literally, juice (of cassava) squeezed out, i.e., pulp after squeezing
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a beadlike starch obtained from cassava root, used in cooking as a thickening agent, esp in puddings
Word Origin for tapioca
C18: via Portuguese from Tupi tipioca pressed-out juice, from tipi residue + ok to squeeze out
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1640s, from Portuguese or Spanish tapioca, from Tupi (Brazil) tipioca, from tipi "residue, dregs" + og, ok "to squeeze out" (from roots of the cassava plant).
Online Etymology Dictionary, © 2010 Douglas Harper