rudder
noun /ˈrʌdə(r)/
  /ˈrʌdər/
 - a piece of wood or metal at the back of a boat or an aircraft that is used for controlling its directionTopics Transport by airc2
enlarge imageWord OriginOld English rōther ‘paddle, oar’, of West Germanic origin; related to Dutch roer, German Ruder, also to the verb row1. 
