- a small, delicate fern, Asplenium rutamuraria, having fan-shaped leaflets and growing on walls and cliffs.
Origin of wall rue
First recorded in 1540–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wall rue
On the base of one which has a sculptured shaft the wall-rue fern was growing.Field and Hedgerow
Nine species are found in Britain, among them the well-known Wall-rue.
- a delicate fern, Asplenium ruta-muraria, that grows in rocky crevices and walls in North America and Eurasia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012