Home › Words › S › superfortresssuperfortresssuperfortress · noun — A massive and heavily protected fortress.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, superfortress ranks #9,379 of 43,061 for Qualifying.EtymologyFrom super- + fortress.nounA 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.e.g.“These women flew fighter planes and B-29 superfortresses as test pilots as well as ferry pilots.” — 1979 April 28, Mary A. Lowry, “Those Wonderful Women in Their Flying Machines (review)”, in Gay Community News, page 10:Definitions & examples from Wiktionary (CC BY-SA 3.0).