東とう学がくMeanings1nounTonghak; Eastern Learning19th-century Korean religious and social movement; a proper noun referring to a specific historical entity.東とう学がくは19世せい紀きの朝ちょう鮮せんで起おこった宗しゅう教きょう運うん動どうです。Tonghak was a religious movement that arose in 19th-century Korea.