especially: a device that consists of a central hub with radiating blades placed and twisted so that each forms part of a helical surface and that is used to propel a vehicle (such as a ship or airplane)
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Approach with caution – The Coast Guard warns people trying to help others in trouble to keep engines off when people are in the water, watch for propellers, and maintain safe distance.—Veronica Fernandez-Alvarado, Sacbee.com, 24 June 2025 These power propellers which are used to direct the blimp and help it to gain altitude.—Trinity Francis, Forbes.com, 20 June 2025 The emergency power system is defined as a ram air turbine (RAT), according to the report, and described as a small propeller that drops from the plane’s fuselage and acts as a backup generator.—David Chiu, People.com, 18 June 2025 In the Candlewood Lake incident, a 20-year-old woman died after being struck by a boat propeller.—Stephen Underwood, Hartford Courant, 3 June 2025 See All Example Sentences for propeller
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