water hyacinth Meaning, Definition & Usage
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noun a tropical floating aquatic plant having spikes of large blue flowers; troublesome in clogging waterways especially in southern United States
Eichhornia spesiosa; water orchid; Eichhornia crassipes.
WordNet
Wa"ter hy"a*cinth
Definitions
(Bot.) Either of several tropical aquatic plants of the genus Eichhornia , related to the pickerel weed.