The Japanese proper noun 'シンジュク (しんじゅく)' refers to 'Shinjuku', a major commercial and administrative district in Tokyo, Japan. It is one of the busiest areas in Tokyo, known for its skyscrapers, shopping centers, entertainment venues, and the Shinjuku Station, which is one of the busiest railway stations in the world. Example sentences: Let's meet at Shinjuku Station「シンジュク駅で会いましょう」(しんじゅくえきであいましょう). Shinjuku is very lively at night「シンジュクは夜とてもにぎやかです」(しんじゅくはよるとてもにぎやかです).