/ Dictionary / Index H horsetail tree: Meaning and Definition of Find definitions for: horse'tail tree" Pronunciation: [key] beefwood (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. horsetail agaric horse trade Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language