(transitive) To cause to shine briefly or intermittently. / (intransitive) To blink; to shine or illuminate intermittently. / (intransitive) To be visible briefly. / (transitive) To make visible briefly.

A sudden, short, temporary burst of light. / A very short amount of time. / (colloquial, US) A flashlight; an electric torch. / (figuratively) A sudden and brilliant burst, as of genius or wit.

(British, Australia and New Zealand, slang) Expensive-looking and demanding attention; stylish; showy. / (UK, of a person) Having plenty of ready money.

A pool. / (engineering) A reservoir and sluiceway beside a navigable stream, just above a shoal, so that the stream may pour in water as boats pass, and thus bear them over the shoal.

simple past tense and past participle of flash

A sudden blazing or bursting, as of fire or water.

present participle of flash

plural of flash

Third-person singular simple present indicative form of flash

(idiomatic) Instantaneously; very quickly; in almost no time.