暗沟 Traditional form: 暗溝 Pinyin (reading): àngōu Definitions: sewer; underground drainage channel Characters: 暗 - dark, gloomy; obscure; secret, covert 沟 - ditch, drain, gutter, narrow waterway Traditional characters: 暗 - dark, gloomy; obscure; secret, covert 溝 - ditch, drain, gutter, narrow waterway