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milfoil

Pronunciation: /ˈmɪlfɔɪl/

Definition of milfoil

noun

  • 1the common Eurasian yarrow.
  • 2 (also water milfoil) a widely distributed aquatic plant with whorls of fine submerged leaves and wind-pollinated flowers.
    • Genus Myriophyllum, family Haloragaceae

Origin:

Middle English: via Old French from Latin millefolium, from mille 'thousand' + folium 'leaf'

milfoil in other Oxford dictionaries

Definition of milfoil in the US English dictionary