A bomb that is designed to start fires; SYN. incendiary.
Bomb containing inflammable matter. Usually dropped by aircraft, incendiary bombs were used in World War I and incendiary shells were used against Zeppelin aircraft. Incendiary bombs were a major weapon in attacks on cities in World War II, causing widespread destruction. To hinder firefighters, delayed-action high-explosive bombs were usually dropped with them. In the Vietnam War, US forces used napalm in incendiary bombs.