Definition of rongo-rongo in English:

rongo-rongo

noun

Archaeology
  • [mass noun] An ancient script of hieroglyphic signs found on wooden tablets on Easter Island. The symbols have not yet been deciphered.

    • ‘Some of those remain undecipherable, like Rongorongo, found on Easter Island, and Indus, the writing of the ancient people of what are now Pakistan and India.’
    • ‘The islanders carved and erected the stone statues, produced many other arts and crafts and developed Rongorongo, the only written language in Oceania.’
    • ‘But the biggest challenge awaiting Whitehead and her team is Rongorongo, the as-yet-undeciphered writing system unique to the ancient civilisations of Easter Island off the coast of Chile.’

Origin

Early 20th century: a local word.

Pronunciation:

rongo-rongo

/ˌrɒŋɡəʊˈrɒŋɡəʊ/