- fifth wheel
- noun1. someone or something that is unwanted and unneeded• Syn: ↑deadwood• Hypernyms: ↑redundancy, ↑redundance2. an extra car wheel and tire for a four-wheel vehicle• Syn: ↑spare• Hypernyms: ↑car wheel3. a steering bearing that enables the front axle of a horse-drawn wagon to rotate• Hypernyms: ↑bearing
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noun1.a. : a horizontal wheel or segment of a wheel that consists of two parts rotating on each other about the kingbolt above the fore axle of a carriage or wagon and beneath the body and that forms an extended support to prevent tippingb. : a coupling in the form of two disks rotating on each other for attaching a vehicle body to the front axle so as to support it in turningc. : a similar coupling between tractor and trailer of a semitrailer2.a. : a spare wheelb. : a light wheel trailed behind an automobile for measuring speed or distance3. : one that is superfluous or burdensomecommittees without authority to act are fifth wheels — F.L.Allen
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1. a horizontal ring or segment of a ring, consisting of two bands that slide on each other, placed above the front axle of a carriage and designed to support the forepart of the body while allowing it to turn freely in a horizontal plane.2. a similar device used as a coupling to connect a semitrailer to a tractor.3. a similar coupling between a heavy-duty pickup truck and a camping trailer (fifth-wheel trailer) that extends over the bed of the truck.4. an extra wheel for a four-wheeled vehicle.5. a superfluous, unneeded, or unwanted person or thing: They enjoy making any outsider feel like a fifth wheel.[1870-75]* * *
fifth wheel noun1. The spare wheel of a four-wheeled vehicle2. A coupling on an articulated vehicle that allows the towing of a trailer3. A superfluous or useless person or thing (informal)• • •Main Entry: ↑fifth* * *
someone in an organization or team who is not really neededThesaurus: group members and describing group membershyponymMain entry: wheel* * *
fifth wheel,1. Informal. a person or thing that is not needed.2. an extra wheel for a four-wheeled vehicle.3. a horizontal ring, placed above the forward axle of a carriage and designed to support the forepart of the body while allowing it to turn freely in a horizontal plane.* * *
n.1) an extra wheel for a four-wheeled vehicle■ informal a superfluous person or thing2) a coupling between a trailer and a vehicle used for towing■ also fifth-wheel trailer a trailer with accommodations for camping out■ historical a horizontal turntable over the front axle of a carriage as an extra support to prevent its tipping* * *
noun, pl ⋯ wheels [count]informal : an extra person who is not needed in a groupHe felt more and more like a fifth wheel at the office.
Useful english dictionary. 2012.