put an end to; kill; "The Nazis snuffed out the life of many Jewish children"
put out, as of fires, flames, or lights; "Too big to be extinguished at once, the forest fires at best could be contained"; "quench the flames"; "snuff out the candles"
having existence or being or actuality; "an attempt to refine the existent machinery to make it more efficient"; "much of the beluga caviar existing in the world is found in the Soviet Union and Iran"