| 1 | English | burrow | A tunnel or hole, often as dug by a small... |
| 2 | English | borough | A fortified town; A town or city; A town having a... |
| 3 | Middle English | borwe | — |
| 4 | Old English | burh | Alternative form of burg; fortress; hill |
| 5 | Old English | burg | city; town; a fortified place: stronghold, fort,... |
| 6 | Proto-Germanic | burgz | fortification, stronghold; city |
| 7 | Proto-Indo-European | bʰr̥ǵʰ- | — |