also: ぴかどん
noun
atomic bomb; A-bomb
Colloquial, onomatopoeic term combining ピカ (flash) and ドン (boom), used especially in reference to the Hiroshima and Nagasaki bombings.
ピカドンは広島と長崎に落とされた。
The atomic bombs were dropped on Hiroshima and Nagasaki.
被爆者はピカドンの恐ろしさを語り継いでいる。
Survivors continue to pass on the horror of the atomic bomb.