Where does “mag-abo” come from?

mag-abo (Bikol Central) comes from Bikol Central abo, from Proto-Philippine qabu, from Proto-Malayo-Polynesian qabu, from Proto-Austronesian qabu — ash.

Ancestry of “mag-abo”, step by step

StepLanguageWordMeaning
1Bikol Centralabo—
2Proto-Philippineqabuash
3Proto-Malayo-Polynesianqabuash solid remains of a fire
4Proto-Austronesianqabuash
Every word from Proto-Austronesian qabu →Every word from Proto-Malayo-Polynesian qabu →Every word from Proto-Philippine qabu →