Propeller
Pronunciation : Pro*pel"ler
Part of Speech : n.
Definition : 1. One who, or that which, propels.
2. A contrivance for propelling a steam vessel, usually consisting of a screw placed in the stern under water, and made to revolve by an engine; a propeller wheel.
3. A steamboat thus propelled; a screw steamer. Propeller wheel,the screw, usually having two or more blades, used in propelling a vessel.
Source : Webster's Unabridged Dictionary, 1913