/ Dictionary / Index O orchard valve: Meaning and Definition of Find definitions for: or'chard valve" Pronunciation: [key] an alfalfa valve of lesser diameter than the pipe it closes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orchard oriole orchectomy Related Content Daily Word Quiz: malady Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language