Trampoline/ˌtræmpəˈliːn/ Definition 1 of 3Pro Tip 1/3Safety Gear Wearing protective gear is important while using a trampoline to prevent injuries. Make sure you wear safety pads before jumping on the trampoline. Pro Tip 2/3Outdoor Activity Trampolines are often found outdoors and used for recreational fun or exercise. They set up a trampoline in their backyard for summer activities. Pro Tip 3/3Supervised Use Children should always be supervised by an adult when using a trampoline. Parents watched as their children took turns on the trampoline.