| Birkwald | birch forest birch grove |
| Birkwild | black grouse |
| Birkenwald | birch forest birch grove |
| Birkhahn | blackcock |
| Eichwald | oakwood |
| Firewall | firewall |
| Urwald | virgin forest boondocks jungle primeval forest |
| bis bald | see you (soon) |
| Birmane | Burmese |
| Birnholz | pear |
| Biryani | biryani |
| Birkauge | wall eye walleye |
| Birke | birch |
| Birkhuhn | black grouse |
| Birma | Burma |
| Birnbaum | pear tree |
| birken | birchen |
| zirka | approximate |
| Zirkel | compass pair of compasses circle |
| wirksam | effective efficacious |