pro·pel·ler also pro·pel·lor (pr -p l r)n. A machine for propelling an aircraft or boat, consisting of a power-driven shaft with radiating blades that are placed so as to thrust air or water in a desired direction when spinning. |
propeller
Noun
a revolving shaft with blades to drive a ship or aircraft
| propeller (pr-plr) 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. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  propeller - a mechanical device that rotates to push against air or waterhub - the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes mechanical device - mechanism consisting of a device that works on mechanical principles screw propeller, screw - a propeller with several angled blades that rotates to push against water or air variable-pitch propeller - propeller for which the angle of the blades is adjustable |
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