pinkroot

pinkroot

[pingk-root, -root]
noun
1.
the root of any of various plants belonging to the genus Spigelia, of the logania family, especially that of S. marilandica of the U.S., that is used as a vermifuge.
2.
any of these plants.

Origin:
1755–65, Americanism; pink1 + root1

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World English Dictionary
pinkroot (ˈpɪŋkˌruːt)
 
n
1.  any of several loganiaceous plants of the genus Spigelia, esp S. marilandica, of the southeastern US, having red-and-yellow flowers and pink roots
2.  the powdered root of this plant, used as a vermifuge
3.  a fungal disease of onions and related plants resulting in stunted growth and shrivelled pink roots

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