jumbo

 
Pronunciation: /ˈdʒʌmbəʊ/
informal

noun (plural jumbos)

  • a very large person or thing.
  • (also jumbo jet) a very large airliner (originally and specifically a Boeing 747).

adjective

[attributive]
  • very large: a jumbo pad

Origin:

early 19th century (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