Definition of Lactarius
: a large genus of white-spored agarics (family Agaricaceae) that exude a white or colored milky juice when cut or broken and that include an edible species (L. deliciosus) and some poisonous ones
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.
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!
Origin and Etymology of lactarius
New Latin, from Latin, milky
Seen and Heard
What made you want to look up Lactarius? Please tell us where you read or heard it (including the quote, if possible).