n. 1. The method or practice of an empiric; pursuit of knowledge by observation and experiment. [ 1913 Webster ]
2. Specifically, a practice of medicine founded on mere experience, without the aid of science or a knowledge of principles; ignorant and unscientific practice; charlatanry; quackery. [ 1913 Webster ]
3. (Metaph.) The philosophical theory which attributes the origin of all our knowledge to experience. [ 1913 Webster ]