propeller

noun

pro·​pel·​ler prə-ˈpe-lər How to pronounce propeller (audio)
variants or less commonly propellor
: one that propels
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)

Examples of propeller in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
When one drone flies directly above another, the downward airflow from its propellers creates strong turbulence. Aamir Khollam, Interesting Engineering, 6 Oct. 2025 The engine's cylinder set repeats the process continuously to create the mechanical energy powering the propeller or driveshaft. New Atlas, 6 Oct. 2025 The two also credit the ease of access to regional funds as a great propeller. Rafa Sales Ross, Variety, 25 Sep. 2025 The drone’s propeller may have gotten caught in power lines and exploded over a packed field. Jacqueline Charles, Miami Herald, 24 Sep. 2025 See All Example Sentences for propeller

Word History

Etymology

propel + -er entry 2

First Known Use

1780, in the meaning defined above

Time Traveler
The first known use of propeller was in 1780

Browse Nearby Words

Cite this Entry

“Propeller.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/propeller. Accessed 8 Oct. 2025.

Kids Definition

propeller

noun
pro·​pel·​ler prə-ˈpel-ər How to pronounce propeller (audio)
: a device consisting of a hub fitted with blades that is made to turn rapidly by an engine and is used especially for propelling airplanes and ships

More from Merriam-Webster on propeller

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!