feverweed

[fee-ver-weed]
noun
  1. any plant belonging to the genus Eryngium, of the parsley family, especially E. foetidum, of the West Indies, or E. campestre, of Europe.
  2. any of various plants believed to reduce fever.

Origin of feverweed

An Americanism dating back to 1835–45; fever + weed1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018