milfoil(redirected from water milfoils)
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[C13: from Old French, from Latin milifolium, from mille thousand + folium leaf]
any composite plant of the genus Achillea, esp. A. millefolium, having fernlike leaves and flat-topped clusters of white-to-yellow flowers.
[before 900; Middle English yar(o)we, Old English gearwe]
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|Noun||1.||milfoil - 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|
achillea - any of several plants of the genus Achillea native to Europe and having small white flowers in flat-topped flower heads