Akademik

rattlesnake root
noun
1. herb of central and southern Europe having purple florets
Syn: ↑Prenanthes purpurea
Hypernyms: ↑herb, ↑herbaceous plant
Member Holonyms: ↑Prenanthes, ↑genus Prenanthes
2. a plant of the genus Nabalus
Hypernyms: ↑herb, ↑herbaceous plant
Hyponyms: ↑white lettuce, ↑cankerweed, ↑Nabalus alba, ↑Prenanthes alba
Member Holonyms: ↑Nabalus, ↑genus Nabalus

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noun
: any of various plants formerly believed to be distasteful to rattlesnakes or effective against their venom: as
a. : a lion's foot of the genus Prenanthes — called also cankerweed; compare gall of the earth
b. : senega root 1
c. : a bugbane (Cimicifuga racemosa)

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1. any of certain composite plants of the genus Prenanthes, whose roots or tubers have been regarded as a remedy for snake bites, as P. serpentaria or P. alba.
2. the root or tuber.
3. the snakeroot, Polygala senega.
4. its root.
[1675-85]

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rattlesnake root,
1. a) any one of various composite plants whose roots have been considered a remedy for snakebites. b) the root of any of these plants.
2. a) = senega. (Cf.senega) b) its root.
[because of its reputed value in cases of snakebite]

Useful english dictionary. 2012.