Definitions

1. noun

A plant of the genus Eupatorium, especially E. cannabinum, which has been used as a medicine and has a pungent odor and a bitter taste.

“The herbalist recommended feverweed to alleviate her symptoms.”

2. noun

Any of various plants of the genus Acmadenia, especially A. tenax, which has a strong and pungent odor.

“The hikers had to navigate through thick feverweed to reach the mountain summit.”