ragweed
/'rægwi:d/
Definition
- Noun:
- A type of North American weed: A common name for any of numerous weedy plants belonging to the genus Ambrosia, which produce pollen that is a major cause of seasonal allergies like hay fever and asthma.
- A European weed: A widespread European weed with yellow, daisy-like flowers, which can be problematic for agriculture and is toxic to livestock if eaten in large quantities.
Usage Examples
- Noun:
- The high ragweed pollen count is making my allergies terrible.
- Farmers work to control ragweed in their fields because it competes with crops.
- The field was overrun with ragweed.
Advanced Usage
- "Ragweed season": Refers to the late summer and early autumn period when these plants release their pollen.
- My doctor advised starting medication before ragweed season begins.
Variants and Related Words
- Common Ragweed (): A specific and very widespread species.
- Giant Ragweed (): A taller species of ragweed.
- Ragwort (): A different but sometimes similarly named European plant with yellow flowers.
Synonyms
- Ambrosia: The scientific genus name, often used interchangeably in botanical contexts.
- Bitterweed: A common name for some similar allergenic plants.
- Hay-fever weed: A descriptive name highlighting its effect.
Related Phrases
- "Ragweed pollen": The fine powder released by ragweed flowers, which is the primary allergen.
- The air quality report includes levels of ragweed pollen.
Related Idioms
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
-
widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
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