Where does “meː₁ʔ” come from?

meː₁ʔ (Proto-Bahnaric) comes from Proto-Mon-Khmer meeʔ.

Ancestry of “meː₁ʔ”, step by step

Step	Language	Word	Meaning
1	Proto-Mon-Khmer	meeʔ	—

meː₁ʔ — Etymology, Origin & Word History | Etymology Explorer