Definitions from Wiktionary (fifth wheel)
▸ noun: (road transport) 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.
▸ noun: In full, fifth-wheel trailer: a large caravan or travel trailer that is connected to a pickup truck for towing by a hitch similar to the one described in sense 1 located in the center of the truck's bed.
▸ noun: (road transport, historical) A horizontal wheel or segment of a wheel above the front axle and beneath the body of a carriage, forming an extended support to prevent it from overturning.
▸ noun: (idiomatic, informal) Anything superfluous or unnecessary.
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▸ noun: (road transport) 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.
▸ noun: In full, fifth-wheel trailer: a large caravan or travel trailer that is connected to a pickup truck for towing by a hitch similar to the one described in sense 1 located in the center of the truck's bed.
▸ noun: (road transport, historical) A horizontal wheel or segment of a wheel above the front axle and beneath the body of a carriage, forming an extended support to prevent it from overturning.
▸ noun: (idiomatic, informal) Anything superfluous or unnecessary.
Similar:
spare,
5th wheel,
spare tool,
trailer hitch,
semi-trailer,
drawhook,
ringbolt hitching,
timber hitch,
six-wheeler,
towball,
more...
Opposite:
Types:
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Adjectives:
▸ Words similar to fifth wheel
▸ Usage examples for fifth wheel
▸ Idioms related to fifth wheel
▸ Wikipedia articles (New!)
▸ Words that often appear near fifth wheel
▸ Rhymes of fifth wheel
▸ Invented words related to fifth wheel