The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several Eurasian plants of the genus Leonurus, especially L. cardiaca, a weed having clusters of small purple or pink flowers and spine-tipped calyx lobes.
the GNU version of the Collaborative International Dictionary of English
n. A labiate herb (Leonurus Cardiaca), of a bitter taste, used popularly in medicine; lion's tail.
n. The mugwort. See mugwort.
The Century Dictionary and Cyclopedia
n. A labiate plant, Leonurus Cardiaca, which grows in waste places. It has sometimes been used in amenorrhea.
n. The mugwort, Artemisia vulgaris, formerly used for uterine affections.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. bitter Old World herb of hedgerows and woodland margins having toothed leaves and white or pale pink flowers
Word Usage
"“‘In the Court of the Inquisition, a motherwort was a person who assisted in apprehending and imprisoning the accused.’”"