What is the meaning of fifth wheel?

noun

  • Someone or something that is unwanted and unneeded.
  • An extra car wheel and tire for a four-wheel vehicle.
  • A steering bearing that enables the front axle of a horse-drawn wagon to rotate. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). fifth wheel. Retrieved September 20, 2026, from http://smartdefine.org/fifth_wheel/definitions/1203973
ChicagoWordNet. 2010. "fifth wheel" http://smartdefine.org/fifth_wheel/definitions/1203973 (accessed September 20, 2026).
HarvardWordNet 2010, fifth wheel, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/fifth_wheel/definitions/1203973>.
MLAWordNet. "fifth wheel" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/fifth_wheel/definitions/1203973>