Where does “k-ləŋ” come from?

k-ləŋ (Proto-Vietic) comes from Proto-Mon-Khmer t₁lan — python.

k-ləŋ (Proto-Vietic): back

Definitions

Step	Language	Word	Meaning
1	Proto-Mon-Khmer	t₁lan	python

k-ləŋ — Etymology, Origin & Word History | Etymology Explorer