jumbo jet

from WordNet (r) 3.0 (2006)

jumbo jet
    n 1: a very large jet plane [syn: {jumbojet}, {jumbo jet}]

from The Collaborative International Dictionary of English v.0.48

jumbo jet \jum"bo jet`\ (j[u^]m"b[-o] j[e^]t`), n.
   A large commercial jet airplane, usually having a passenger
   capacity of over 300 in normal use; also called {widebody
   airplane}.
   [PJC]