Tiwatiwa’ Tiwasa (Dimasa) Contributed by: Kulendra Daulagupu on 2012-05-19 1. Sociology(Common Noun) an aboriginal tribe in Assam. অসমৰ এটা উল্লেখযোগ্য জনগোষ্ঠী৷ English: Tiwa, Assamese: তিৱা, লালুং, Karbi: Langlu, Dimasa: Tiwasa