flasher

Anything that flashes, especially a device that switches a light on and off.

An indicator or turn signal.

Look here, look at this fire truck! It has flashers and sirens, and if you push the button at the bottom, it moves by itself.

Someone of great accomplishments, or brilliant appearance.

Mr Yorke of D'Affrenalli has been introduced to me as a Wit & a Flasher: it was supposed that we were to admire one another's Abilities,—but I fancy the Project failed on both Sides […].

Someone who exposes themselves indecently; someone who ‘flashes’ their genitals.

The only diversions I recall were a pair of Avocets flying over, and a young lady who regularly each afternoon furtively crept into the dunes [...] and crouched down for a clandestine wee! Either that, or she was a very shy flasher.

A city in North Dakota.

A software developer who uses the Flash multimedia technology.

JavaScript is an appealing solution for Flashers because it operates in the same client-side environment […]