What is "jinul"

Bojo Jinul (, 1158–1210), often called Jinul or Chinul for short, was a Korean monk of the Goryeo period, who is considered to be the most influential figure in the formation of Korean Seon (Zen) Buddhism. He is credited as the founder of the Jogye Order, by working to unify the disparate sects in Korean Buddhism into a cohesive organization.