B1
a weapon that explodes and causes damage
Dictionary examples:
The bomb squad expert mistook his lunch box for a real bomb. (0.0)
The spy's watch was actually a tiny bomb, but he forgot the instructions. (0.0)
The cat thought the ticking bomb was a new toy to play with. (0.0)
a car bomb (22.8)
a nuclear bomb (27.6)
The bomb exploded/went off near a busy market. (28.7)