Definition of water hyacinth in English English dictionary
Either of several tropical aquatic plants of the genus Eichhornia, related to the pickerel weed
a tropical floating aquatic plant having spikes of large blue flowers; troublesome in clogging waterways especially in southern United States
A tropical American herb (Eichhornia crassipes) forming dense floating masses in ponds and streams and having large bluish-purple flowers and leafstalks with greatly inflated bases. Any of about five species of aquatic plants that make up the genus Eichhornia of the pickerelweed family (Pontederiaceae). They are native mainly to the New World tropics. Some species float in shallow water; others are rooted in muddy streambanks and lakeshores. All have slender rootstocks, feathery roots, rosettes of stalked leaves, and flowers arranged in spikes or clusters. The common water hyacinth (E. crassipes) is the most widespread. The leafstalk is spongy and inflated, and the upper lobes of its purple flowers have blue and yellow markings. It reproduces quickly, often clogging slow-flowing streams. It is used as an ornamental in outdoor pools and aquariums