ragweed

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
  2. noun any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma

Etymology

From rag + weed. Compare Middle English ragwed (“butcher's broom”).

In classic literature

Synonyms

ragwort, tansy ragwort, benweed, Senecio jacobaea

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