/ Dictionary / Index R rosinweed: Meaning and Definition of Find definitions for: ros•in•weed Pronunciation: (roz'in-wēd"), [key] — n. any coarse, North American, composite plant of the genus Silphium, having a resinous juice and stalkless, paired leaves. the compass plant, S. laciniatum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rosinweed (Thesaurus) Rosinante Rosita Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language