A unit of currency in ancient times. There is a view that it represents the price of one lamb.
Genesis 33:19He bought the plot of ground where he pitched his tent from the sons of Hamor, Shechem’s father, for a hundred kesitahs.
Joshua 24:32And the bones of Joseph, which the Israelites had brought up from Egypt, were buried at Shechem in the plot of ground that Jacob had bought for a hundred kesitahs from the sons of Hamor, Shechem’s father. It became the inheritance of the descendants of Joseph.