Where does “gravlax” come from?

gravlax (Portuguese) comes from Swedish gravlax, from Swedish lax, from Old Norse lax, from Proto-Germanic lahsaz, from Chinese 拉薩, from Tibetan ལྷ་ས, from Old Tibetan ར་ས.

gravlax (Portuguese): gravlax appetizer of dry-cured salmon

Definitions

gravlax appetizer of dry-cured salmon

Ancestry of “gravlax”, step by step

Step	Language	Word	Meaning
1	Swedish	gravlax	gravlax appetizer of dry-cured salmon
2	Swedish	lax	salmon; a bill with nominal value 1000 kronor...
3	Old Norse	lax	salmon
4	Proto-Germanic	lahsaz	salmon
5	Chinese	拉薩	—
6	Tibetan	ལྷ་ས	Lhasa
7	Old Tibetan	ར་ས	—

Every word from Old Tibetan ར་ས →Every word from Tibetan ལྷ་ས →Every word from Chinese 拉薩 →