superfortress

== English == === Etymology === From super- +‎ fortress. === Noun === superfortress (plural superfortresses) A massive and heavily protected fortress. A bomber aeroplane that is larger than and superior to by being technically advanced compared to the Boeing B-17 "flying fortress", specifically the Boeing B-29 long-range heavy bomber aeroplane that was developed during the early 1940s. === References === “superfortress”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.