忠ちゅう犬けんちゅうけんMeanings1nounfaithful dog; loyal dogRefers to a dog known for its loyalty, often used in stories like Hachikō. Can be used literally or figuratively.ハチ公こうは忠ちゅう犬けんとして有ゆう名めいだ。Hachikō is famous as a faithful dog.彼かれはまるで忠ちゅう犬けんのように上じょう司しに従したがう。He follows his boss like a loyal dog.