暗渠 Traditional form: 暗渠 Pinyin (reading): ànqú Definitions: underground water channel covered ditch culvert Characters: 暗 - dark, gloomy; obscure; secret, covert 渠 - ditch, gutter; canal, channel Traditional characters: 暗 - dark, gloomy; obscure; secret, covert 渠 - ditch, gutter; canal, channel