Nautical. a vertical blade at the stern of a vessel that can be turned horizontally to change the vessel’s direction when in motion.
Aeronautics. a movable control surface attached to a vertical stabilizer, located at the rear of an airplane and used, along with the ailerons, to turn the airplane.
any means of or device for governing, directing, or guiding a course, as a leader or principle:
His ideas provided a rudder for the new company.
(nautical) a pivoted vertical vane that projects into the water at the stern of a vessel and can be controlled by a tiller, wheel, or other apparatus to steer the vessel
a vertical control surface attached to the rear of the fin used to steer an aircraft, in conjunction with the ailerons
anything that guides or directs


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  • Rudderpost

    noun, Nautical. 1. the vertical member of a stern frame on which the rudder is hung; a sternpost. noun (nautical) 1. Also called rudderstock (ˈrʌdəˌstɒk). a postlike member at the forward edge of a rudder 2. the part of the stern frame of a vessel to which a rudder is fitted

  • Rudderstock

    noun, Nautical. 1. the vertical member at the forward edge of a rudder, hinged at the sternpost and attached to the helm or steering gear.

  • Ruddevator

    noun, Aeronautics. 1. a control surface functioning both as a rudder and as an elevator.

  • Ruddier

    adjective, ruddier, ruddiest. 1. of or having a fresh, healthy red color: a ruddy complexion. 2. red or reddish. 3. British Slang. damned: a ruddy fool. adverb 4. British Slang. damned: He’d ruddy well better be there. adjective -dier, -diest 1. (of the complexion) having a healthy reddish colour, usually resulting from an outdoor life […]

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