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breadroot

[bred-root, -roo t]
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noun
  1. the edible starchy root of Psoralea esculenta, a leguminous plant of central North America.
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Origin of breadroot

An Americanism dating back to 1820–30; bread + root1
Also called Indian breadroot, pomme blanche, prairie potato, prairie turnip.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for breadroot

breadroot

noun
  1. a leguminous plant, Psoralea esculenta, of central North America, having an edible starchy rootAlso called: prairie turnip
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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