smut grass

noun

: a grass (Sporobolus poiretii) native to the West Indies but common in the southern U.S. that often has its tufted wiry stems and narrow panicles infested with a fungus (Helminthosporium ravenelii)

called also blackseed, carpet grass

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!