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

These could be something as natural as gravity pulling the fluid downwards, or an artificial intervention like a propeller. — Konstantin Kakaes, Quanta Magazine, 8 Sep. 2026

Traditionally, many of these devices have relied on propellers, which cause some issues. — Maryna Holovnova, New Atlas, 8 Sep. 2026

Authorities said Floros was struck by the boat’s outboard engine propellers, resulting in the partial amputation of his left leg and significant injury to the right ankle, per the outlet. — Yamillah Hurtado, PEOPLE, 3 Sep. 2026

The jumpers climbed into the belly of a maroon-and-white jumpship as its propellers began to whir and then roar. — M. R. O’Connor, New Yorker, 31 Aug. 2026

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