jumbo
/ˈdʒʌmbəu; `dʒʌmbo/ adj[attrib 作定语]
(infml 口) unusually large; enormous 特大的; 极大的
a jumbo(-sized) packet of washing-powder 特大（型）包装的洗衣粉. jumbo, n (pl ~s) (also jumbo jet) very large jet aircraft that can carry several hundred passengers 珍宝喷气客机.