| Blauzunge | blue-tongue lizard |
| Blauzungenskink | blue-tongue lizard |
| Blaualge | cyanobacteria cyanophyta |
| Blähung | flatulence |
| Bläuling | gossamer-winged butterfly |
| Landzunge | bill cape |
| Blutung | bleeding haemorrhage |
| Blasdüse | tuyere |
| Blaumerle | blue rock thrush |
| Blauzahn | Bluetooth |
| Bläue | blueness |
| Blage | brat |
| Blamage | disgrace |
| Blattauge | leaf bud |
| Blaubeere | blueberry bilberry |
| Blaubirke | blue birch |
| Blaumann | overalls |
| Blaumeise | blue tit |
| Blaumiese | blues |
| Blaupause | blueprint |