informal <非正式>
(pl. -os)
1- a very large person or thing身躯硕大的人; 庞然大物。
1.1
- （亦作jumbo jet）a very large airliner (originally and specifically a Boeing 747)大型喷气式客机（原专指波音747）。
词源
early 19th cent. (originally of a person)： probably the second element of MUMBO-JUMBO. Originally denoting a large and clumsy person, the term was popularized as the name of an elephant at London Zoo, sold in 1882 to the Barnum and Bailey circus.