Definition of four-wheel drive noun from the Oxford Advanced American Dictionary

 

four-wheel drive

 noun
noun
 
[uncountable, countable](abbreviation 4WD)
 
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a system in which power is applied to all four wheels of a vehicle, making it easier to control; a vehicle with this system a car with four-wheel drive We rented a four-wheel drive to get around the island. see also four-by-four