/ Dictionary / Index W wall rue: Meaning and Definition of Find definitions for: wall' rue" Pronunciation: [key] a small, delicate fern, Asplenium rutamuraria, having fan-shaped leaflets and growing on walls and cliffs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wall rock Wallsend Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language