Knotweed

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of several plants of the genus Polygonum, with jointed stems and inconspicuous flowers

Etymology

From knot + weed.

Related phrases

Chinese knotweedJapanese knotweed

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.