Meanings

experimental fishery station

beautiful riverside location

water transportation

watered capital

mercury poisoning

whirligig beetle (any insect of family Gyrinidae, esp. the Japanese whirligig beetle, Gyrinus japonicus)

drowning

inundating a castle

hair oil

liquid manure

(Edo-period) roadside teahouse where one would go to relax (in comparison with a restaurant style teahouse and teahouse offering sexual services)

hydroponics

hydroponics

watercolors

(Japanese) Fisheries Agency

water trough

crystal or quartz timepiece

(act of) drinking water

water pistol

jonquil (Narcissus jonquilla)