JUMBO Meaning of JUMBO in English jumbo, Jumbo BrE AmE ˈdʒʌm bəʊ AmE \ -boʊ▷ jumbo|s z▶ ˈ jumbo jet, ˌ•• ˈ• BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012