/ Dictionary / Index A allheal: Meaning and Definition of Find definitions for: all•heal Pronunciation: (ôl'hēl"), [key] — n. valerian (def. 1). any of several plants once believed to have extensive curative powers, as the selfheal, Prunella vulgaris. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Allhallowtide alliaceous Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language