Found 2 items, similar to water milfoil.
English → English (WordNet) Definition: water milfoil water milfoil n : an aquatic plant of the genus Myriophyllum having feathery underwater leaves and small inconspicuous flowers
English → English (gcide) Definition: Water milfoil Milfoil \Mil"foil\, n. [F. mille-feuille, L. millefolium; mille thousand + folium leaf. See Foil a leaf.] (Bot.) A common composite herb (Achillea Millefolium) with white flowers and finely dissected leaves; yarrow. [1913 Webster] Water milfoil (Bot.), an aquatic herb with dissected leaves (Myriophyllum). [1913 Webster] Water milfoil \Wa“ter mil”foil\ (Bot.) Any plant of the genus Myriophyllum, aquatic herbs with whorled leaves, the submersed ones pinnately parted into capillary divisions. [1913 Webster]