knotweed definition

  • noun:
    • any one of several flowers for the genus Polygonum, with jointed stems and hidden flowers.
    • Any of several flowers of the genus Polygonum, with jointed stems and inconspicuous flowers
    • identify knotgrass.
    • A plant of one associated with the types of knapweed or knobweed, Centaurea nigra, C. Cyanus, and C. Scabiosa: so-called from the knot-like heads.
    • A plant regarding the genus Polygonum, which includes the doorweed, the smartweeds and water-pepper, the prince's-feather, etc.; knotgrass or jointweed: so called through the knotty stem.

Related Sources

  • Sentence for "knotweed"
    • Resveratrol comes from grapes (hence the…
    • View More
  • Cross Reference for "knotweed"
  • Form for "knotweed"
77 votes

How would you define knotweed?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!