Related Clues:

• Run engine with top off to see this?
• Mechanical turning part
• Blade that can swivel
• Revolutionary device for lifting a chopper
• Revolver taken from soldiers after climbing hill
• Something to eradicate double-headed snake?
• A short rebuke for every cleaner
• Turning part of a mechanism
• Turning component
• Squeegee's purpose
• Such as turns to and fro
• Aerofoil
• Helicopter vane
• Revolving machinery
• It goes round and around as well as up and down