توباوْ (Pattani Malay) comes from Proto-Malayic *tuba(ʔ), from Proto-Malayo-Polynesian *tubah, from Proto-Austronesian *tubah — Derris elliptica a plant with roots that are pounded and put in rivers to stun fish.
توباوْ (Pattani Malay): fish poison made from plant roots