Definition of matamata in US English:

matamata

noun

  • A grotesque South American freshwater turtle that has a broad flat head and neck with irregular projections of skin resembling waterweed.

    Chelus fimbriatus, family Chelidae

Origin

Mid 19th century: from Tupi matamatá.

Pronunciation

matamata

/ˈmadəməˌtä/