Dictionary.com
Thesaurus.com

locoweed

American  
[loh-koh-weed] / ˈloʊ koʊˌwid /

noun

  1. any of various leguminous plants of the genera Astragalus and Oxytropis, of the southwestern U.S. and Mexico, causing locoism in sheep, horses, etc.


locoweed British  
/ ˈləʊkəʊˌwiːd /

noun

  1. any of several perennial leguminous plants of the genera Oxytropis and Astragalus of W North America that cause loco disease in horses, cattle, and sheep

"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 locoweed

An Americanism dating back to 1875–80; loco + weed 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

West Texas has rigid paintbrush, yellow rocknettle and the purple wooly locoweed.

From Washington Times

He made an altar with cactus spines and purple locoweed flowers.

From Literature

Jimsonweed, a k a Jamestown weed, mad apple, devil’s trumpet, locoweed, stinkwort or thorn apple, is a strikingly gothic-looking plant with seedpods that could have inspired the creator of “Little Shop of Horrors.”

From New York Times

Why, son," he continued, "every longhorn who's ever cinched a Colorado saddle, or roped a steer, is plumb aware of locoweed.

From Project Gutenberg

Doc Peets informs me once when we crosses up with some locoweed over by the Cow Springs, that thar's two or three breeds of this malignant vegetable.

From Project Gutenberg