Where does “batoa” come from?

batoa (Cebuano) comes from Cebuano Bato, from Proto-Malayo-Polynesian batu, from Proto-Austronesian *batux — rock; stone.

Ancestry of “batoa”, step by step

StepLanguageWordMeaning
1CebuanoBatostone; pebble, rock, or boulder
2Proto-Malayo-Polynesianbatustone
3Proto-Austronesian*batuxrock; stone
Every word from Proto-Austronesian *batux →Every word from Proto-Malayo-Polynesian batu →Every word from Cebuano Bato →