Meaning of screw propeller

screw' propel"ler

Pronunciation: [key]

a rotary propelling device, as for a ship or airplane, consisting of a number of blades that radiate from a central hub and are so inclined to the plane of rotation as to tend to drive a helical path through the substance in which they rotate.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

screw press screw thread

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