A practitioner in medicine or surgery, who proceeds on experience only, without science or legal qualification; a quack. Nelson v. State Board of Health, 108 Ky. 769, 57 S. W. 501, 50 L. R. A. 383; Parks v. State, 159 Ind. 211, 64 N. E. 862, 59 L. R. A. 190.