Dictionary 1. (n.) A shallow sound, channel, pond, or lake, especially one into which the sea flows; as, the lagoons of Venice.2. (n.) A lake in a coral island, often occupying a large portion of its area, and usually communicating with the sea. See Atoll. Thesaurus artificial lake bayou lake cistern dam dead water dike etang farm pond fishpond freshwater lake glacial lake inland sea laguna lake lakelet landlocked water linn loch lough mere millpond millpool nyanza oxbow lake plash pond pondlet pool puddle reservoir salina salt pond stagnant water standing water still water sump tank tarn tidal pond volcanic lake water hole water pocket well |