1
: 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
2
: 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
3
: a guiding force or strategy
Examples of rudder in a Sentence
Recent Examples on the Web
When the stern rises, rudders lose bite in the water, making steering more difficult, Schuster said.
—
Brad Lendon, CNN Money, 9 July 2025
Verdier’s most notable innovation is the use of a canting keel as the support for one of the foils, with the other two contact points being a foil on the rudder and, alternately, the two lateral foils.
—Bill Springer, Forbes.com, 7 July 2025
Verdier’s innovative design will use a canting keel as the support for one of the foils, with the other two contact points being a foil on the rudder and the two lateral foils.
—Rachel Cormack, Robb Report, 26 June 2025
Some of the findings offer a glimpse into how the ship went down: For example, the rudder was found around 800 feet away from the shipwreck.
—Andrea Margolis, FOXNews.com, 13 June 2025
See All Example Sentences for rudder
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Brad Lendon, CNN Money, 9 July 2025
Verdier’s most notable innovation is the use of a canting keel as the support for one of the foils, with the other two contact points being a foil on the rudder and, alternately, the two lateral foils.
—Bill Springer, Forbes.com, 7 July 2025
Verdier’s innovative design will use a canting keel as the support for one of the foils, with the other two contact points being a foil on the rudder and the two lateral foils.
—Rachel Cormack, Robb Report, 26 June 2025
Some of the findings offer a glimpse into how the ship went down: For example, the rudder was found around 800 feet away from the shipwreck.
—Andrea Margolis, FOXNews.com, 13 June 2025
See All Example Sentences for rudder
Cite this Entry
“Rudder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rudder. Accessed 29 Jul. 2025.
Copy CitationKids Definition
rudder
noun
rud·der
ˈrəd-ər 
: a flat movable piece (as of wood or metal) attached to the rear of a ship or aircraft for steering
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