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

One of the highlights will be the 75% scale P-38 that has runway lights, smoke and spinning propellers that will turn on after a Buzzer home run. —Kurt Snibbe, Oc Register, 31 Mar. 2026

Those threats include boat strikes from propellers slicing through shells, being caught in fishing nets, shoreline development, tree removal reducing natural cover, de-icing bubblers that give otters access to hibernating turtles, and climate change. —Ryan Brennan, Miami Herald, 30 Mar. 2026

Another interesting area of study could be cavitation from boat or submarine propellers, pumps, and some sonar systems. —Christopher McFadden, Interesting Engineering, 29 Mar. 2026

First, a physical acoustic shield inspired by bat’s ear cartilage reduces propeller noise around the acoustic sensors, which act like the robot’s ears. —Nitin Sanket, The Conversation, 27 Mar. 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