1. a device with rotating blades that pushes air or water to move a vehicle forward

Examples

• The airplane’s propeller spun rapidly before takeoff.
• The boat’s propeller got tangled in seaweed.
• He could hear the drone of the propeller overhead.
• The mechanic inspected each blade of the propeller.
• Small aircraft often use single-engine propellers.
• The ship’s propeller churned the water behind it.