Where does “vôi” come from?

vôi (Vietnamese) comes from Proto-Vietic k-puːr, from Proto-Mon-Khmer knpur — lime.

vôi (Vietnamese): lime

Definitions

Step	Language	Word	Meaning
1	Proto-Vietic	k-puːr	lime
2	Proto-Mon-Khmer	knpur	lime

vôi — Etymology, Origin & Word History | Etymology Explorer