1. plural of rudder; flat pieces hinged vertically at the stern of boats or ships, used for steering
Usage: nautical
2. plural of rudder; movable control surfaces on aircraft tails used for steering left and right
Usage: aviation

Examples

• The yacht’s twin rudders provided excellent maneuverability in tight spaces.
• Both rudders were damaged when the ship ran aground on the reef.
• The pilot checked that both rudders were responding properly before takeoff.
• Modern aircraft have backup systems in case the primary rudders fail.
• The sailing instructor explained how rudders work to steer the boat.
• Ice had formed around the rudders, making steering difficult.