rosinweed

[ roz-in-weed ]
/ ˈrɒz ɪnˌwid /

noun

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

Origin of rosinweed

An Americanism dating back to 1825–35; rosin + weed1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for rosinweed

rosinweed

/ (ˈrɒzɪnˌwiːd) /

noun

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