flying fortress
noun
An informal name for the Boeing B-17, an American long-range heavy bomber aeroplane developed in the late 1930s.
Origin
1930s; earliest use found in The New York Times.
| 单词 | flying fortress |
| 释义 | flying fortressnoun An informal name for the Boeing B-17, an American long-range heavy bomber aeroplane developed in the late 1930s. Origin |
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