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Definition of smartweed

smartweed

/ˈsmɑːrt.wiːd/
smart · weed
Plural:smartweeds
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smartweed Lexical Profile

smartweed Game Scores & Validity

• noun

1

Any of various annual or perennial herbaceous plants of the genus Persicaria (formerly Polygonum) in the buckwheat family Polygonaceae, native to temperate and tropical regions worldwide, characterized by swollen stem nodes, lance-shaped leaves, and dense, slender terminal spikes of small pink, white, or greenish flowers, with several species containing an acrid juice that causes a stinging sensation on contact.

Example

"Clusters of pink-flowered smartweed bloomed along the muddy edges of the drainage ditch in late summer."

Synonyms
View all synonyms for smartweed

• Nearby Words

smartphone
smarts
smartwatch
smartweed
smarty
smartypants
smash

Word Origin & Etymology

Formed in English from 'smart' (in its older sense of causing a sharp, stinging sensation) and 'weed', referring to the acrid, peppery juice of certain species that irritates the skin and mucous membranes.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Smartweed. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/smartweed
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