IPA: //ˈræɡ.wɔːrt//
KK: /ˈræɡwɜrt/
A type of plant that belongs to the large genus Senecio, known for its yellow flowers. Some species can be harmful to animals.
The ragwort in the field was blooming brightly, attracting many insects.
Ragwort is formed from "rag" (from Old English *ræge*, meaning rough or shaggy) and "wort" (from Old English *wyrt*, meaning plant or herb). The word refers to a rough or shaggy plant, specifically a type of flowering plant in the daisy family.
Think of a 'rough' ('rag') plant ('wort') — that's why ragwort refers to a shaggy-looking herb.