water-hyacinth

water hyacinth

noun
a floating aquatic plant, Eichornia crassipes, of tropical lakes and rivers, that grows so prolifically it often hinders the passage of boats.

Origin:
1895–1900, Americanism

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water hyacinth
 
n
a floating aquatic plant, Eichhornia crassipes, of tropical America, having showy bluish-purple flowers and swollen leafstalks: family Pontederiaceae. It forms dense masses in rivers, ponds, etc, and is a serious problem in the southern US, Australia, and parts of Africa

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