Related Clues:
- Drone — bustle
- Futuristic deliverer of packages
- Unmanned plane to make low hum
- Hum uplifting bit of Beethoven or Debussy
- Something from the hive served up in delicatessen or diner
- Go on and on in given order travelling north
- Idle chap is leading medic?
- Flying machine in Endor exploded
- Monotonous speaker, doctor on energy
- Surveillance gizmo
- Sense of excitement
- Romeo in socially acceptable flying machine
- Fledgling delivery method
- Doctor with unit is a lazy person
- Flying bot