An attachment to the muzzle of a firearm which reduces the amount of visible light created when fired

plural of flash point

(roofing) an accessory flashing used to cover and/or seal soil pipe vents and other penetrations through a roof (sometimes referred to as roof jack or flashing boot).

plural of flash frame

In video or film editing, a very short shot (usually one frame, but occasionally several) appearing in a sequence of images. Flash frames are usually the inadvertent result of an editing mistake or an equipment problem. From time to time, however, they are inserted intentionally for creative reasons.

(meteorology, astronomy) A rare phenomenon observed in morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash or ray of green light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere.

A hand grenade that produces a very bright flash and a loud explosion, but no shrapnel and minimal explosive force, to disorient the target.

Alternative spelling of newsflash

(idiomatic, simile) Extremely quickly.

(idiomatic, simile) Extremely quick.