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Definition of: rudder
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(rud′ər) noun
1. Naut. A broad, flat device hinged vertically at the stern of a vessel to direct its course.
2. Anything that guides or directs a course.
3. Aeron. A hinged or pivoted surface, used to control the position of an aircraft about its vertical axis. [OE rōthor oar, scull]
—rud′·der·less adjective
A. Sailboat B. Motorboat.
r. Rudder.
s. Screw.
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