Definition of flashers:
(n) :
(automotive) An indicator or turn signal.
(n) :
Anything that flashes, especially a device that switches a light on and off.
(n) :
(slang) Someone who exposes themselves indecently; someone who ‘flashes’ their genitals.
(n) :
(obsolete) Someone of great accomplishments, or brilliant appearance.
(n) :
(computing, informal) A software developer who uses the Flash multimedia technology.
(n) :
A city in North Dakota.