| Backbone | backbone |
| Backbonenetz | backbone network |
| Backbord | port larboard |
| backbord | port |
| Back-End | back end |
| Backen | baking cheek |
| backen | bake stick |
| Backe | cheek jowl buttock jaw shoe cheek piece |
| Backform | baking tin |
| Backhefe | baker's yeast |
| Backofen | oven |
| Backronym | backronym |
| Backware | pastries |
| Bacon | bacon |
| Blackbox | black box |
| Alkione | Alcyone |
| Zakone | Tsakonian |
| Baumkrone | top treetop |
| Makrone | macaroon |
| Backspace | backspace |