propeller

noun

pro·​pel·​ler prə-ˈpe-lər 

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

Different methods for making these loud propulsion systems quieter include skewered propeller blades that distribute pressure more evenly. —Chris Young, Interesting Engineering, 8 Dec. 2025

That is, the interaction of hull, rudders, and propellers, which is extremely complicated and requires advanced numerical models. —New Atlas, 7 Dec. 2025

Collect your beanie hat with propeller at the door. —Pomerado News, San Diego Union-Tribune, 4 Dec. 2025

The drone's motor then appeared to shut off and the aircraft landed itself, with its propellers windmilling slightly on the way down, the video shows. —Annie Palmer, CNBC, 26 Nov. 2025

Word History

Etymology

propel + -er entry 2

First Known Use

1780, in the meaning defined above

Phrases Containing propeller

• propeller-head
• screw propeller

Rhymes for propeller

• bestseller
• bookseller
• flagellar
• impeller
• lamellar
• micellar
• modeller
• ocellar
• patellar
• reseller
• scutellar
• beller

Kids Definition

propeller

noun

pro·​pel·​ler prə-ˈpel-ər 

: 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