breadroot

noun

1. densely hairy perennial of central North America having edible tuberous roots

   noun.plant

   Synonyms indian breadroot pomme blanche pomme de prairie psoralea esculenta

   Source: WordNet 3.0

2. The root of a leguminous plant (<i>Psoralea esculenta</i>), found near the Rocky Mountains. It is usually oval in form, and abounds in farinaceous matter, affording sweet and palatable food.

   noun

   Source: webster1913