Where does “dông bão” come from?

dông bão (Vietnamese) comes from Vietnamese báo, from Chinese 豹, from Chinese 駁, from Proto-Sino-Tibetan *prawk — to be speckled, variegated, spotted.

dông bão (Vietnamese): a thunderstorm

Definitions

a thunderstorm

Ancestry of “dông bão”, step by step

dông bão traces back through two separate lines of ancestry.

via Vietnamese báo

Step	Language	Word	Meaning
1	Vietnamese	báo	a leopard; a spotted panther; a jaguar or a snow...
2	Chinese	豹	—
3	Chinese	駁	—
4	Proto-Sino-Tibetan	*prawk	to be speckled, variegated, spotted

via Vietnamese đồng

Step	Language	Word	Meaning
1	Vietnamese	đồng	field; medium; sorcerer; copper
2	Vietnamese	đất	earth; soil; dirt; land
3	Proto-Vietic	tət	—

Every word from Proto-Sino-Tibetan *prawk →Every word from Chinese 駁 →Every word from Chinese 豹 →