didg·er·i·doo or didj·er·i·doo 
(dĭj′ə-rē-d, dĭjə-rē-d′)
(dĭj′ə-rē-d, dĭjə-rē-d′)n. pl. didg·er·i·doos or didj·er·i·doos
A musical instrument of the Aboriginal peoples of Australia, consisting of a long hollow branch or stick that makes a deep drone when blown into while vibrating the lips.
[Imitative of its sound.]
didgeridoo