nga·dju \əŋˈgä(ˌ)jü\noun alsongadju dayak (pluralngadjuorngadjusalsongadju dayakorngadju dayaks) Usage: usually capitalized N&D 1. a.: a Dayak people inhabiting the interior of Borneo b.: a member of such people 2.: the Austronesian language of the Ngadju people