What is "piapot"

Piapot, Payipwât, or Payipwat (Hole in the Sioux or One Who Knows the Secrets of the Sioux), born as Kisikawasan (Flash in the Sky), known by his Assiniboine allies as Maȟpíya owáde hókši (Lightning In The Sky Boy) (–April 1908) was a Native Canadian chief of the Cree-Assiniboine / Young Dogs Band, a mighty band and division of the Downstream People (Māmihkiyiniwak) of the Plains Cree. He was one of the five major leaders of the Plains Cree after 1860.