“Jumbo-Jet.” dictionary Merriam-Webster.com, Merriam-Webster, www.merriam-webster.com/dictionary/jumbo%20jet. Accessed October 11, 2022. Jonkman compares the huge moving parts to a jumbo jet that only needs to fly every 10 years. The money arrived in large cash carriers — euros, Swiss francs and other currencies — just as six American prisoners, including the Washington Post`s Jason Rezaian, were released. He had jumped very cleverly to this point of the Vantage, but he found Jumbo in front of him, worse than ever!.