noun

• An explosive device used or intended as a weapon, especially, one dropped from an aircraft.
  "During the Cold War, everyone worried about the bomb sometimes."
• An explosive device used or intended as a weapon, especially, one dropped from an aircraft.
  "If Alberta’s reserves are a carbon bomb, this global expansion of tar sands and oil shale exploitation amounts to an escalating emissions arms race, the unlocking of a subterranean cache of weapons of mass ecological destruction."
• An explosive device used or intended as a weapon, especially, one dropped from an aircraft.
  "And the rockets' red glare, the bombs bursting in air / Gave proof through the night that our flag was still there"
• An explosive device used or intended as a weapon, especially, one dropped from an aircraft.

verb

• (transitive, intransitive) To attack using one or more bombs; to bombard.
  "2000, Canadian Peace Research Institute, Canadian Peace Research and Education Association, Peace Research, Volumes 32-33, page 65, 15 May: US jets bombed air-defence sites north of Mosul, as the Russian Foreign Ministry accused the US and Britain of intentionally bombing civilian targets. (AP)"
• (transitive, intransitive) To attack using one or more bombs; to bombard.
  "School days have been missed or cut short many times to accommodate soccer travel through the years, but this return felt different. Photos posted on his social media documenting the experience were seen by classmates, many of whom bombed him with questions about his future in the sport."
• (informal)
• (informal)

adj

• (slang) Great, awesome.
  "Have you tried the new tacos from that restaurant? They're pretty bomb!"

noun

• (informal) The atomic bomb; the capacity to launch a nuclear attack.
  "Pakistan and India both have the Bomb now."