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horse gentian

American  

noun

  1. any weedy North American plant of the genus Triosteum, of the honeysuckle family, especially T. perfoliatum, having stalkless leaves and purplish-brown flowers and bearing orange fruits.


horse gentian British  

noun

  1. Also called: feverwort.  any caprifoliaceous plant of the genus Triosteum, of Asia and North America, having small purplish-brown flowers

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of horse gentian

An Americanism dating back to 1835–45