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Fat Man

American  

noun

  1. the code name for the plutonium-core, implosion-type atom bomb the U.S. first tested and then dropped on Nagasaki in 1945.


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Example Sentences

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After this successful test, the Gadget was succeeded by Fat Man and Little Boy, the two bombs dropped over Japan.

From The Wall Street Journal ● Aug. 7, 2026

Fat Man and Little Boy are holding steady. apnews.com/article/dei-...

From Salon ● Mar. 10, 2025

Elsewhere is a display meant to honor the Japanese people killed and injured by Fat Man and Little Boy, a smaller bomb dropped on Hiroshima three days earlier.

From New York Times ● Apr. 26, 2024

Katie Hafner: So pretty much all of Los Alamos then retrenched around a different design, an implosion weapon that would become the Trinity device and then the Fat Man bomb that was dropped on Nagasaki.

From Scientific American ● Aug. 3, 2023

Fat Man was loaded into a B-29, and Sweeney and his crew took off and flew toward Japan early on the morning of August 9.

From "Bomb" by Steve Sheinkin

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