WordReference Random House Unabridged Dictionary of American English © 2020
Bif•rost (biv′rost),USA pronunciation n. [Scand. Myth.]
- Mythologythe rainbow bridge of the gods from Asgard to earth.
- Old Norse Bifrǫst, equivalent. to bif- (root of bifa, cognate with Old English bifian to shake) + rǫst, cognate with Old High German rasta stretch of road
'Bifrost' also found in these entries (note: many are not synonyms or translations):