Dallis-grass definition
A South American perennial grass (Paspalum dilatatum) having long seedheads, grown for pasturage in the southern United States and often occurring as a weed in lawns.
noun
A tall, succulent, forage grass (Paspalum dilatatum), with hairy spikelets, much grown in the S U.S.
noun
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Origin of dallis-grass
- After A.T. Dallis 19th-century American farmer who promoted its use as pasturage
From American Heritage Dictionary of the English Language, 5th Edition