| Rohrpost | pneumatic post |
| Ruhrpott | Ruhr Area |
| Röhricht | reed bed reeds |
| ohrlos | earless |
| Polarpost | polarpost |
| Kompost | compost |
| Nordost | northeast |
| Roheit | savageness |
| Rohrblatt | reed |
| Rohrstock | cane |
| Röhrling | bolete |
| röhren | bray |
| Rohr | tube pipe gun barrel |
| Rohrbogen | bent tube elbow elbow pipe pipe bend pipe elbow tube bend |
| Rohrbombe | pipe bomb |
| Rohrratte | cane rat |
| Rohrspatz | reed bunting |
| Rohstoff | raw material feedstock commodity resource |
| Rohöl | crude oil |
| Röhrchen | cannula tubule |