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rosinweed

American  
[roz-in-weed] / ˈrɒz ɪnˌwid /

noun

  1. any coarse, North American, composite plant of the genus Silphium, having a resinous juice and stalkless, paired leaves.

  2. the compass plant, S. laciniatum.

rosinweed British  
/ ˈrɒzɪnˌwiːd /

noun

  1. any of several North American plants of the genus Silphium and related genera, esp the compass plant, having resinous juice, sticky foliage, and a strong smell: family Asteraceae (composites)

"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 rosinweed

An Americanism dating back to 1825–35; rosin + weed 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.