Motocross/ˈməʊtəʊkrɔːs/ Definition 1 of 2Pro Tip 1/3Action Sport Motocross is a dynamic and competitive outdoor sport involving dirt bikes. Fans gathered to watch the thrilling motocross event this weekend. Pro Tip 2/3Off-road Racing Motocross racing occurs on unpaved, rough terrains; usually involves navigating obstacles. The motocross track had steep hills and deep mud pits. Pro Tip 3/3Specialized Clothing Riders wear protective gear like helmets and pads specific to motocross for safety. He invested in high-quality motocross boots to prevent injuries.