Birdweed

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of certain species of plants of the genus Polygonum, especially countable, uncountable
  2. 2
    Any of certain species of plants of the genus Polygonum, especially; Polygonum aviculare (common knotgrass) countable, uncountable

Synonyms

All synonyms
common knotgrass

Etymology

From bird + weed.

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