noun \ˈrə-dər\

: a flat, movable piece usually of wood or metal that is attached to a ship, boat, airplane, etc., and is used in steering

Full Definition of RUDDER

:  an underwater blade that is positioned at the stern of a boat or ship and controlled by its helm and that when turned causes the vessel's head to turn in the same direction
:  a movable auxiliary airfoil on an airplane usually attached at the rear end that serves to control direction of flight in the horizontal plane — see airplane illustration
:  a guiding force or strategy
rud·der·less \-ləs\ adjective

Origin of RUDDER

Middle English rother, from Old English rōther paddle; akin to Old English rōwan to row
First Known Use: 14th century

Rhymes with RUDDER


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