Definition of masterwort
: any of several herbaceous plants (family Umbelliferae) used especially formerly in medicine: a : a coarse European plant (Imperatoria ostruthium) with large ternate leaves b : a European herb (Astrantia major) that has dark-colored aromatic roots and leaves mostly in a basal tuft and is sometimes cultivated for its showy compound umbels of white to rosy flowers c : cow parsnip d : angelica 1b
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up masterwort? Please tell us where you read or heard it (including the quote, if possible).