propeller

American  

[pruh-pel-er] / prəˈpɛl ər /

noun

• propellers
  plural

1. a device having a revolving hub with radiating blades, for propelling an airplane, ship, etc.

2. a person or thing that propels.

3. the bladed rotor of a pump that drives the fluid axially.

4. a wind-driven, usually three-bladed, device that provides mechanical energy, as for driving an electric alternator in wind plants.

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propeller British  

/ prəˈpɛlə /

noun

1. a device having blades radiating from a central hub that is rotated to produce thrust to propel a ship, aircraft, etc

2. a person or thing that propels

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propeller Scientific  

/ prə-pĕl′ər /

1. A device consisting of a set of two or more twisted, airfoil-shaped blades mounted around a shaft and spun to provide propulsion of a vehicle through water or air, or to cause fluid flow, as in a pump. The lift generated by the spinning blades provides the force that propels the vehicle or the fluid—the lift does not have to result in an actual upward force; its direction is simply parallel to the rotating shaft.

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Other Word Forms

Noun Inflected Forms

• propellers
  plural

Etymology

Origin of propeller

First recorded in 1770–80; propel + -er ¹

Explanation

A propeller is a rounded blade that rotates in a circle, helping to move a vehicle by pushing against water or air. A speed boat's propeller moves it forward by spinning against the water. Propellers use the laws of physics to propel, or drive forward, an aircraft or a boat. The basic structure of a propeller is a spinning or rotating shaft with wide, curved blades attached to it. The very simplest propellers were first used in ancient Greece, where the inventor Archimedes invented a "screw propeller" that moved water for irrigating crops.

Example Sentences

See Examples For:

propeller propellers

That alarm would be triggered by a potential engine failure, causing low propeller rotation, or a problem with the hydraulic system, said Jack Cress, a former helicopter pilot for the U.S.

From Los Angeles Times ● Sep. 17, 2026

We’d seen nearly every stage of production — from “grass to glass,” as McAfee called it — when he parked his truck next to the hangar that houses his Cessna 210 Centurion propeller plane.

From Salon ● Jun. 22, 2026

They also said its injuries indicated it had contact with a ship propeller and a fishing net.

From BBC ● Apr. 16, 2026

Instead of one propeller, for example, the aircraft has 12, so if one fails, the aircraft and pilot can continue to fly.

From The Wall Street Journal ● Dec. 3, 2025

Robin took her place before the left propeller with her hands resting on the blade.

From "Dragonwings" by Laurence Yep

Federal agents have radar, acoustic sensors to detect the distinct noise signature of a drone’s motors and propellers and thermal and optical detection.

From Los Angeles Times ● Jun. 18, 2026

In the footage, two charred propellers and engines can be clearly seen.

From Barron's ● Apr. 5, 2026

"There is an opportunity to improve the design of the propellers," he told Holyrood's net zero, energy and transport committee on Tuesday.

From BBC ● Mar. 11, 2026

Instead, they have propellers, reach speeds of 110 miles per hour and emit high-pitched buzzing sounds.

From The Wall Street Journal ● Feb. 13, 2026

When three West Computers made the leap in the late 1940s to Cascade Aerodynamics, a group that studied the aerodynamics of propellers, turbines, and other rotating bodies, it caused a commotion.

From "Hidden Figures" by Margot Lee Shetterly

Related Words

• screw