The Collaborative International Dictionary
Flindersia schottiana
bunji-bunji \bunji-bunji\ n. an Australian timber tree ( Flindersia schottiana) whose bark yields a poison.
Wikipedia
Flindersia schottiana
Flindersia schottiana is a species of plant in the Rutaceae family. It is found in Australia, West Papua ( Indonesia), and Papua New Guinea. It is threatened by habitat loss in New Guinea but it is still fairly common in northern New South Wales and southern Queensland, where it is grown as a street tree.
It is known as the cudgerie or bumpy ash in Australia.