Propeller
Propeller , noun
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.
Collocations (1)
Propeller wheel , the screw, usually having two or more blades, used in propelling a vessel.