/ Dictionary / Index S silk tree: Meaning and Definition of Find definitions for: silk' tree" Pronunciation: [key] a tree, Albizia julibrissin, of the legume family, native to Asia, having pinnate leaves and plumelike pink flowers and widely cultivated as an ornamental. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silk-tassel silkweed Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language