Dutch word buil comes from Proto-Indo-European *bʰew-, Proto-Germanic *būlǭ (Swelling; bump; boil.), Proto-Indo-European *bʰōw-
| Dictionary entry | Language | Definition |
|---|---|---|
| *bʰew- | Proto-Indo-European (ine-pro) | |
| *būlǭ | Proto-Germanic (gem-pro) | Swelling; bump; boil. |
| *bʰōw- | Proto-Indo-European (ine-pro) | to swell, inflate, to blow, swell , to dwell |
| *būlō | Proto-Germanic (gem-pro) | Boil; sore. |
| *būlijǭ | Proto-Germanic (gem-pro) | |
| *būla | Old Dutch (odt) | |
| buil | Dutch (nld) | Bruise, bump. |