1. （主要用于广告和产品名称中）巨大的，巨型的，特大的
Jumbo means very large; used mainly in advertising and in the names of products.
e.g. ...a jumbo box of tissues.
特大盒纸巾
e.g. ...grilled jumbo prawns.
烤大虾
2. 大型喷气式客机
A jumbo or a jumbo jet is a very large jet aircraft that can carry several hundred passengers.
e.g. ...a British Airways jumbo.
英国航空公司的大型喷气式客机