assegai
noun
as·se·gai ˈa-si-ˌgī 
variants or assagai
: a slender hardwood spear or light javelin usually tipped with iron and used in southern Africa
Word History
Etymology
ultimately from Arabic al-zaghāya the assegai, from al- the + Berber zaghāya spear
First Known Use
1600, in the meaning defined above