a very large person or thing 庞然大物 ■(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)
adjective
[attrib.]very large 巨大的 a jumbo pad. 一本特大号便笺簿。
语源
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