motorcyclemotorcycle /ˈməʊtəˌsaɪkəl $ -tər-/ noun [countable] a fast two-wheeled vehicle with an engine一种有发动机的快速两轮车辆vehículo rápido de dos ruedas con motorveículo rápido de duas rodas com motorエンジン付きの速い二輪車엔진이 달린 빠른 이륜 차량 SYN  motorbike—motorcycling noun [uncountable]—motorcyclist noun [countable]