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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The team used computer simulations to find the perfect propeller shape.—Aamir Khollam, Interesting Engineering, 10 Feb. 2026 The front of the plane appeared dented in footage, and a propeller blade was twisted.—Michael Loria, USA Today, 9 Feb. 2026 The Blackbird's propellers were trimmed down to hit higher top speeds as well.—New Atlas, 6 Feb. 2026 The result is many annoyed fan owners tugging vigorously on the chain, only to have their fan suddenly turn into an in-home airplane propeller.—Mack Degeurin, Popular Science, 5 Feb. 2026 See All Example Sentences for propeller