Where does “ຕົ້ນໄມ້” come from?

ຕົ້ນໄມ້ (Lao) comes from Lao ໄມ້, from Proto-Tai mwajᶜ — tree; wood; tree, wood.

ຕົ້ນໄມ້ (Lao): tree

Definitions

Step	Language	Word	Meaning
1	Lao	ໄມ້	plant, tree; wood, timber; plank; wooden object
2	Proto-Tai	mwajᶜ	tree; wood; tree, wood

ຕົ້ນໄມ້ — Etymology, Origin & Word History | Etymology Explorer