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Any of several plants of the genus Eryngium of the parsley family, especially E. yuccifolium of central and eastern North America, once thought effective against rattlesnake venom and having narrow spiny leaves and clusters of small whitish flowers.
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|Noun||1.||rattlesnake master - coarse prickly perennial eryngo of United States thought to cure rattlesnake bite|
perennial - (botany) a plant lasting for three seasons or more