Fifth wheel Meaning, Definition & Usage
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noun someone or something that is unwanted and unneeded
deadwood.
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noun an extra car wheel and tire for a four-wheel vehicle
spare.
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noun a steering bearing that enables the front axle of a horse-drawn wagon to rotate
WordNet
Definitions
- a horizontal wheel or segment above the fore axle of a carriage and beneath the body, forming an extended support to prevent careening.