alligator weed


variants or alligator grass
: a prolific herbaceous weed (Alternanthera phylloxeroides) having opposite entire linear-lanceolate leaves and flowers in short headlike spikes and being especially troublesome in irrigation canals and waterways which it clogs with a dense floating mass

Word History


so called from its long narrow leaves

First Known Use

1887, in the meaning defined above

Time Traveler
The first known use of alligator weed was in 1887

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Dictionary Entries Near alligator weed

Cite this Entry

“Alligator weed.” Dictionary, Merriam-Webster, Accessed 16 Jun. 2024.

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