Ragweed definition

răgwēd
Any of various weeds of the genus Ambrosia of the composite family, having small, greenish, unisexual flower heads and producing abundant pollen that is one of the chief causes of hay fever.
noun
0
0
(chiefly british) Ragwort.
noun
0
0
Any of a genus (Ambrosia) of chiefly North American plants of the composite family, having tassel-like, greenish flowers which yield large amounts of wind-borne pollen, a major cause of hay fever.
noun
0
0
Any of various weeds of the genus Ambrosia of the composite family, having small, greenish, unisexual flower heads and producing abundant pollen that is one of the chief causes of hay fever.
noun
0
0
(chiefly british) Ragwort.
noun
0
0
Advertisement
A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen which people with hay fever are allergic to.
noun
0
0

Other Word Forms

Noun

Singular:
ragweed
Plural:
ragweeds

Origin of ragweed

  • From the ragged shape of its leaves

    From American Heritage Dictionary of the English Language, 5th Edition

  • rag +"Ž weed

    From Wiktionary