ICBMFreq.FrequencyTop 50,000Meanings1nounintercontinental ballistic missile; ICBMMilitary abbreviation for 大陸間弾道ミサイル (intercontinental ballistic missile).See also: 大陸間弾道ミサイルICBMの発はっ射しゃ実じっ験けんが行おこなわれた。An ICBM launch test was conducted.