Where does “သုံးထပ်သား” come from?

သုံးထပ်သား (Burmese) comes from Burmese သား, from Old Burmese သဟ်, from Proto-Sino-Tibetan *tsəʔ — child, son, offspring; grandson; relatives; nephew/niece.

သုံးထပ်သား (Burmese): plywood (laminated with three layers of veneer)

Definitions

plywood (laminated with three layers of veneer)

Ancestry of “သုံးထပ်သား”, step by step

သုံးထပ်သား traces back through 3 separate lines of ancestry.

via Burmese သား

Step	Language	Word	Meaning
1	Burmese	သား	son; meat, flesh
2	Old Burmese	သဟ်	son
3	Proto-Sino-Tibetan	*tsəʔ	child, son, offspring; grandson; relatives; nephew/niece

via Burmese သုံး

Step	Language	Word	Meaning
1	Burmese	သုံး	three
2	Proto-Sino-Tibetan	*kV-sum	three

via Burmese ထပ်

Step	Language	Word	Meaning
1	Burmese	ထပ်	to stack; to pile; to place one upon another; to...

Every word from Proto-Sino-Tibetan *tsəʔ →Every word from Old Burmese သဟ် →Every word from Burmese သား →