Library / English Dictionary

    RAGWEED

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    Any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthmaplay

    Synonyms:

    ambrosia; bitterweed; ragweed

    Classified under:

    Nouns denoting plants

    Hypernyms ("ragweed" is a kind of...):

    weed (any plant that crowds out cultivated plants)

    Hyponyms (each of the following is a kind of "ragweed"):

    Ambrosia artemisiifolia; common ragweed (annual weed with finely divided foliage and spikes of green flowers; common in North America; introduced elsewhere accidentally)

    Ambrosia trifida; great ragweed (a coarse annual with some leaves deeply and palmately three-cleft or five-cleft)

    Ambrosia psilostachya; perennial ragweed; western ragweed (coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico)

    Holonyms ("ragweed" is a member of...):

    genus Ambrosia (comprising the ragweeds; in some classification considered the type genus of a separate family Ambrosiaceae)

    Sense 2

    Meaning:

    Widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantityplay

    Synonyms:

    benweed; ragweed; ragwort; Senecio jacobaea; tansy ragwort

    Classified under:

    Nouns denoting plants

    Hypernyms ("ragweed" is a kind of...):

    weed (any plant that crowds out cultivated plants)

    Holonyms ("ragweed" is a member of...):

    genus Senecio; Senecio (enormous and diverse cosmopolitan genus of trees and shrubs and vines and herbs including many weeds)

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