TRAMPOLINE is validvalid

to use a spring-mounted horizontal fabric used for gymnastics [v TRAMPOLINED, TRAMPOLINES, TRAMPOLINING] : TRAMPOLINING [n]

142,955 of 196,601 in NWL2023·also valid in CSW24

(tradename) a springy mat for bouncing on, also TRAMPOLIN [n -S] / to use a trampoline [v TRAMPOLINED, TRAMPOLINING, TRAMPOLINES]