1. A tropical floating aquatic plant having spikes of large blue flowers; troublesome in clogging waterways especially in southern United States
   "water orchid has become an invasive species in Florida's waterways";
   - water hyacinth, Eichhornia crassipes, Eichhornia spesiosa

Derived forms: water orchids

Type of: aquatic plant, hydrophyte, hydrophytic plant, water plant

Part of: Eichhornia, genus Eichhornia

Encyclopedia: Water orchid