from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Raw, thinly sliced, cured salmon seasoned with dill and served usually as an appetizer.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Salmon dry-cured in salt, seasoned with dill and sugar, and served usually thinly sliced as an appetizer.
Swedish : grava, to bury (from the original process of curing it in the ground); + lax, salmon.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Swedish gravlax, a compound of grava ("dry-cure in salt and sugar") + lax ("salmon"). (Wiktionary)