Tao 
(dou, tou) also Dao (dou)
(dou, tou) also Dao (dou)n.
1. In Taoism, the basic, eternal principle of the universe that transcends reality and is the source of being, non-being, and change.
2. In Confucianism, the right manner of human activity and virtuous conduct seen as stemming from universal criteria and ideals governing right, wrong, and other categories of existence.
[Mandarin dào, road, way, Tao, from Middle Chinese tɦaw`, from Early Middle Chinese daw', from Old Chinese *lûʔ.]