rongorongo
Concise Oxford English Dictionary © 2008 Oxford University Press:
rongorongo /ˌrɒŋgəʊˈrɒŋgəʊ/
▶noun Archaeology an ancient script of hieroglyphic signs found on wooden tablets on Easter Island.
– origin early 20th cent.: a local word.
'rongorongo' also found in these Oxford entries:

