| Blauhäher | blue jay |
| Blauzahn | Bluetooth |
| Blattader | leaf vein nerve vein |
| Blauhai | blue shark |
| blaumachen | skive |
| Lauscher | eavesdropper |
| Blücher | blucher |
| Ablaufhahn | petcock |
| Blaubart | Bluebeard |
| Blaublüter | blue blood |
| Blaustern | squill |
| Blazer | blazer |
| Bläser | blower |
| Blätter | foliage |
| Bläue | blueness |
| Blamage | disgrace |
| Blasrohr | blowpipe |
| Blattfaser | leaf fibre |
| Blattkäfer | leaf beetle |
| Blaualge | cyanobacteria cyanophyta |