noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A plant of species Ruellia tuberosa.
2. 2
   coarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowers wordnet
3. 3
   Any of the plants in the genus Triosteum.

Synonyms

All synonyms

herbhorse gentiantinker's roottriosteum perfoliatumtriostium perfoliatumwild coffee

Etymology

From fever + root.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.