bitterroot

noun
bit·​ter·​root | \ˈbi-tər-ˌrüt, ˈbi-tə-, -ˌru̇t\

Definition of bitterroot 

: a succulent herb (Lewisia rediviva) of the purslane family that grows in western North America and has starchy roots and pink or white flowers

First Known Use of bitterroot

1838, in the meaning defined above

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The first known use of bitterroot was in 1838

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