5th wheel

A form of fifth wheel — A type of trailer hitch, which consists of a horseshoe-shaped plate on a multidirectional pivot, with a locking pin to couple with the kingpin of a truck trailer.

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Meanings

noun5th wheel (plural 5th wheels)

plural 5th wheels

  1. alternativeAlternative form of fifth wheel.
Cite this entry
APA

5th wheel. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/5th%20wheel

MLA

“5th wheel.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/5th%20wheel. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “5th wheel,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/5th%20wheel.

Source: 5th wheel on Wiktionary, CC BY-SA 4.0.