Where does “bro” come from?
bro (Old Danish) comes from Old East Norse brō, from Proto-Germanic brōwō, from Proto-Indo-European bʰruh- — beam; bridge; beam, bridge.
Ancestry of “bro”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old East Norse | brō | — |
| 2 | Proto-Germanic | brōwō | bridge; brow |
| 3 | Proto-Indo-European | bʰruh- | beam; bridge; beam, bridge |