Related Clues:
- Sound of a blender blade
- Appeal when wicket's taken by Aussie, caught by bowler?
- Sound from a propeller
- Drone sound
- Emulate a blender
- "Huh?" relative
- Buzz kin
- Soft swishing sound
- Machinery sound
- Make a humming noise
- What rotors do
- What helicopter rotors do
- An appeal to the umpire?
- Electric fan noise
- Rotor sound