Where does “trai bao” come from?

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

trai bao (Vietnamese): gigolo; male escort

Definitions

gigolo; male escort

Ancestry of “trai bao”, step by step

trai bao 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 trái

Step	Language	Word	Meaning
1	Vietnamese	trái	left; reverse; morally wrong, unreasonable,...
2	Proto-Vietic	p-laːs	fathom
3	Proto-Mon-Khmer	laas	to spread; to extend

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