/ Dictionary / Index W wild senna: Meaning and Definition of Find definitions for: wild' sen'na Pronunciation: [key] a subshrubby senna, Cassia marilandica, of the eastern U.S., having yellow flowers. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wild sarsaparilla wild service tree Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language