Definition of fifth wheel in English:
nounchiefly North American
1An extra wheel for a four-wheeled vehicle.
- Mann adds that a sliding fifth wheel helps drivers get into tight places.
- And while you're driving, why don't you give a thought and a thanks to those nameless engineers and designers who have devoted so much attention to this most important fifth wheel.
1.1 informal A superfluous person or thing.
- Though they tried to include me in their activities I generally declined their invitations not wanting to be a third wheel or a fifth wheel or a seventh wheel.
- I was now the fifth wheel, and I hated being the fifth wheel.
- I grew tired of being the fifth wheel so I got up and went into my room to study.
2.1 (also fifth-wheel trailer) A trailer with accommodations for camping out.
- We'd buy a large pickup truck and a fifth-wheel trailer and would travel the United States indefinitely - a retirement many couples enjoy immensely.
- On the other hand, my parents own a fifth-wheel trailer.
- In February 2003, my wife and I began our year as usual by hooking up our fifth-wheel trailer and travelling south for some winter sun.
Definition of fifth wheel in:
- British & World English dictionary
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