- any composite plant belonging to the genus Sonchus, especially S. oleraceus, a weed having thistlelike leaves, yellow flowers, and a milky juice.
Origin of sow thistle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sow thistle
The Sow-thistle is considered by astrologers to be under the dominion of Venus.Plant Lore, Legends, and Lyrics
In its channel I saw some of the milk or sow-thistle plant growing—the Sonchus oleraceus.
Two species of Sow-thistle (genus Sonchus) are included among our wayside Composites.Field and Woodland Plants
William S. Furneaux
- any of various plants of the Old World genus Sonchus, esp S. oleraceus, having milky juice, prickly leaves, and heads of yellow flowers: family Asteraceae (composites)Also called: milk thistle, (NZ) puha, (NZ) rauriki
C13: from sugethistel, perhaps variant of Old English thugethistel, thuthistel thowthistle, a dialect name of the sow thistle. See sow ², thistle
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