Definition of marsh fleabane
1 : a plant of the genus Pluchea
2 less commonly marsh fleawort or marsh groundsel : a groundsel (Senecio congestus) of northern and arctic regions that has thick hollow stems, long narrow leaves sometimes used as a potherb, and dense heads of yellow flowers
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 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 marsh fleabane? Please tell us where you read or heard it (including the quote, if possible).