a snap of somebody’s fingers | meaning of a snap of somebody’s fingers in Longman Dictionary of Contemporary English | LDOCE

From Longman Dictionary of Contemporary Englisha snap of somebody’s fingersa snap of somebody’s fingersHBHa sudden sound made by quickly moving one of your fingers against your thumb  At a snap of his owner’s fingers, the dog came running. → snapExamples from the Corpusa snap of somebody’s fingers• What else? exclaimed Papa with a snap of his fingers.