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)
rosinweed in American English
(ˈrɑzənˌwid)
US
noun
1.
any of a genus (Silphium) of North American plants of the composite family that have resinous juice, stickyfoliage, and strong odors, including the compass plant