mil·foil /ˈmɪlˌfɔɪl/
耆草屬植物,西洋耆草
Mil·foil n. Bot. A common composite herb (Achillea Millefolium) with white flowers and finely dissected leaves; yarrow.
Water milfoil Bot., an aquatic herb with dissected leaves (Myriophyllum).
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milfoil
n : ubiquitous strong-scented mat-forming Eurasian herb of
wasteland, hedgerow or pasture having narrow serrate
leaves and small usually white florets; widely
naturalized in North America [syn: yarrow, Achillea
millefolium]