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Definition of milkweed
milkweed
/ˈmɪlk.wiːd/
milk · weed
Plural:milkweeds
milkweed Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
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• noun
1
North American A herbaceous plant of the genus Asclepias, native primarily to the Americas, characterized by its sticky, milky white sap, distinctive seed pods, and vital ecological role as the primary host plant for monarch butterfly larvae.
Example
"Local conservationists urged residents to plant native milkweed in their gardens to support the declining population of monarch butterflies."
Synonyms
View all synonyms for milkweed• Rhymes for milkweed
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Word Origin & Etymology
Coined in the late 16th century as a compound of 'milk' and 'weed', directly referring to the sticky, milky white sap that exudes from the plant's stem and leaves when they are broken.
Cite this Entry
Wordmom. (2026). Definition of Milkweed. In Wordmom Dictionary. Retrieved Oct 13, 2026, from https://wordmom.com/dictionary/milkweed