American Heritage Dictionary
(1)
Century Dictionary
GNU Webster's 1913
WordNet
(1)
Elsewhere on the web
Jump on a mini-trampoline (highly recommended during tv commercials), do rapid standing long jumps, rapid standing high jumps, jumping jacks, and jumping rope.— Find Free Articles - ArticlesBase
High winds early Thursday morning lifted this trampoline onto a neighbor's roof in the 1800 block of E. Oak Avenue leaving it stranded until electric crews could turn off the power as the trampoline was caught on the house's incoming electrical line.
There are rope courses, flying and static trapeze, trampoline, aerial silks, medieval sword fighting, acrobatic yoga and professional aerial and acrobatic shows.— Find Free Articles - ArticlesBase
Out back it's a trampoline, and bikes and surfboards all lined in a row, ready for blended-family adventure.— The Seattle Times
The mini-trampoline is unique in the fact that it is able to prove a strenuous workout, but also go easy on joints and cartilage in the body.— Article Source

American Heritage Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.