the world > matter > light > light emitted in particular manner > [verb (transitive)] > emit (light, etc.) with a flash (9)
transitive. To emit or convey (light, fire, etc.) in a sudden flash or flashes. Also with forth, out.
transitive. To flash forth. literal and figurative.
To emit with a flash or gleam. to glance back: to flash back, reflect.
figurative (intransitive and transitive) To flash.