Where does “*suʀi,*ruʀi” come from?

*suʀi,*ruʀi (Proto-Oceanic) comes from Proto-Malayo-Polynesian duʀi, from Proto-Austronesian duʀi — thorn.

Ancestry of “*suʀi,*ruʀi”, step by step

StepLanguageWordMeaning
1Proto-Malayo-Polynesianduʀithorn
2Proto-Austronesianduʀithorn
Every word from Proto-Austronesian duʀi →Every word from Proto-Malayo-Polynesian duʀi →