Wiktionary
n. (jumping jack English)
Wikipedia
Jumping Jacks is a 1952 film starring the comedy team of Martin and Lewis. The film was released by Paramount Pictures. One of the military comedies that marked the duo's early career, Brigadier General Frank Dern, Deputy Chief of the US Army's Information Office praised Jumping Jacks as something that would "contribute to troop morale within the Army."
Usage examples of "jumping jacks".
Walden started all her classes with a military-style workout, complete with jumping jacks and squat thrusts.
Jean-Baptiste can do push-ups, sit-ups and jumping jacks whenever he pleases inside his sixty-four-square-foot cell.
Every once in a while they would do some jumping jacks, but mostly they gabbed with each other.
He has got his routine down pat: leave the antenna pointed generally westwards for a while, then swing it back and forth in diminishing arcs, pretending to zero in on a U-boat, then leave it sitting for a while and do jumping jacks to warm back up.
Sigismund Markus was kneeling at Mama's feet, and all the plush animals, bears, monkeys, dogs, the dolls with eyes that opened and shut, the fire engines, rocking horses, and even the jumping jacks that guarded the shop, seemed on the point of kneeling with him.
Her dress was slit so far up the side, she should have been doing jumping jacks.
He broke into a series of jumping jacks, causing Joyce to gasp in concern.
Along with the missive, I sent two jumping jacks and a carved bear and a sack of horehound candies.
It passed through a huge gym where young women were exercising, doing jumping jacks, laughing, their breasts bounding merrily.
Some of the Gurkha troops sat nearby, cleaning their famous machete-like long knives and watching the Aussies do jumping jacks.