a pistol that will keep firing until the ammunition is gone or the trigger is released;
light machine gun;
operating with minimal human intervention; independent of external control; "automatic transmission"; "a budget deficit that caused automatic spending cuts";
like the unthinking functioning of a machine; "an automatic `thank you''"; "machinelike efficiency";
without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive";
