berongga-rongga

== Indonesian == === Etymology === From ber- +‎ reduplication of rongga (“cavity”). === Verb === berongga-rongga to possess many cavities === Further reading === “berongga-rongga”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016