noun
or whizzbang ˈ ̷ ̷ˌ ̷ ̷
Etymology: whiz (II) + bang
1.
a. : a whizzing ending in a bang
b. : one that speeds usually noisily to a climax : whiz
2.
a. : a small shell of such high velocity that the sound it makes in passing through the air is almost simultaneous with its explosion
b. : a firecracker or similar firework resembling such a shell
c. : a robot bomb