Where does “bro” come from?
bro (Middle English) comes from Old Norse brá, from Proto-Germanic brēwō, from Proto-Indo-European h₃bʰrúHs — eyebrow.
Ancestry of “bro”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Norse | brá | eyelash |
| 2 | Proto-Germanic | brēwō | eyebrow |
| 3 | Proto-Indo-European | h₃bʰrúHs | eyebrow |