| Bruchlinie | fault |
| Bauchbinde | truss |
| Buchlunge | book lung |
| bäuchlings | face-down |
| Dachlinie | roofline |
| Buslinie | bus route bus line |
| Grundlinie | baseline |
| Richtlinie | directive guideline policy principle rule |
| Bruchband | truss |
| Bruchbude | hovel |
| Bruchfläche | fracture plane |
| Bruchteil | fraction |
| brüchig | fragile brittle cracked hoarse crumbling perishable shaky unstable |
| rücklings | backwards |
| Bäuchlein | tummy |
| Buchbinder | bookbinder |
| Buchfink | chaffinch |
| Büchlein | booklet |
| Armschlinge | sling |
| Brachland | fallow land wasteland |