a mat-forming plant, Aurinia saxatilis (or Alyssum saxatille), of the mustard family, having spatulate leaves and open clusters of pale yellow flowers.
Origin of madwort
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a low-growing Eurasian boraginaceous plant, Asperugo procumbens, with small blue flowers
any of certain other plants, such as alyssum
Word Origin for madwort
C16: once alleged to be a cure for madness
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