Definition of tansy ragwort
: an Old World yellow-flowered senecio (Senecio jacobaea) that is naturalized in North America and is toxic to livestock
First Known Use of tansy ragwort
Learn More about tansy ragwort
Britannica.com: Encyclopedia article about tansy ragwort
Seen and Heard
What made you want to look up tansy ragwort? Please tell us where you read or heard it (including the quote, if possible).