flash-bang n. an explosive device that emits noise and light but is not intended to cause damage. Editorial Note: Flash-bang grenade is the full, more common, form. (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
A Vermont listener named Amy is looking for a word to denote a particular kind of light. She has an eye condition that makes her photophobic, which means that ordinary light makes her physically uncomfortable. She wants a word that describes that...
Tom Clancy uses this word alot in his earlier books.
Also a commonly used term in theatrical and film special effects.