| Blauracke | European roller |
| Baracke | barrack hut shack |
| Blattranke | leaf tendril |
| Blaualge | cyanobacteria cyanophyta |
| Blaubirke | blue birch |
| Blaupause | blueprint |
| Blausäure | hydrogen cyanide prussic acid hydrocyanic acid |
| blaumachen | skive |
| Barack | Barack |
| Karacke | carrack |
| Blutrache | vendetta blood feud |
| Grauwacke | graywacke greywacke |
| Blasrolle | party horn |
| Blaubart | Bluebeard |
| Blauhäher | blue jay |
| Blaumerle | blue rock thrush |
| Blauzahn | Bluetooth |
| Blauzunge | blue-tongue lizard |
| Bläue | blueness |
| blaugrau | blue-gray |