tricyclePronunciation: /ˈtrʌɪsɪk(ə)l/Translate tricycle | into French | into German | into Italian | into Spanish Definition of tricycle noun a vehicle similar to a bicycle, but having three wheels, two at the back and one at the front. a three-wheeled motor vehicle for a disabled driver. verb [no object] (often as noun tricycling) ride on a tricycle: between 1876 and 1892 tricycling attracted thousands of adherentsDerivatives tricyclist noun tricycle in other Oxford dictionaries Definition of tricycle in the US English dictionary