noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A massive and heavily protected fortress.
2. 2
   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.

   "These women flew fighter planes and B-29 superfortresses as test pilots as well as ferry pilots."

Example

More examples

"These women flew fighter planes and B-29 superfortresses as test pilots as well as ferry pilots."

Etymology

From super- + fortress.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.