[n. hwiz-bang, wiz-; adj. hwiz-bang, wiz-] 
| 1. | Military. a small, high-speed shell whose sound as it flies through the air arrives almost at the same instant as its explosion. |
| 2. | a firecracker with a similar effect. |
| 3. | Informal. whiz 1 (def. 5). |
| 4. | Informal. first-rate; topnotch: a whiz-bang navigator. |
| whiz-bang also whizz-bang (hwĭz'bāng', wĭz'-) n. One that is conspicuously effective, successful, or skillful: a whiz-bang of a speech. adj.
[From whizzbang, a shell used in World War I that was heard only an instant before landing and exploding : whiz + bang1.] |