The characteristic visual phenomenon produced by the atmospheric detonation of a nuclear weapon, consisting of a very brief, bright flash of light which dims rapidly, followed by a second, gradually brightening flash.

A printed example design shown on paper or cardboard to give customers at a tattoo parlor an idea of a possible tattoo.

(criminology) A form of organized theft in which a group of people enter a shop en masse and steal merchandise, while the employees are overwhelmed by sheer numbers.

plural of flash rob

(slang) To speak thieves' slang.

(meteorology) Flooding that occurs during a flash flood.

simple past tense and past participle of flash back

(photography) A circular electronic flash that fits around a camera lens.

The process whereby objects are frozen in a few hours by subjecting them to cryogenic temperatures, or through direct contact with liquid nitrogen.

To undergo flashover.