What is "jimpul"

Jimpul (other names also include Jumbul, Mandau Pasir, Parang Djimpul, Parang Jimpul) is a traditional weapon of the Sea Dayak and Kenyah people from Borneo. It is often thought that the Parang Jimpul may be considered as a hybrid between the Mandau and Langgai Tinggang. The Parang Jimpul is an intermediary form between the Mandau and the Langgai Tinggang dating from c. 1870-c. 1885.