(From frico, to rub). Rubbing. Friction of the body, if duly continued and repeated, promotes absorption and perspiration, quickens the circulation, particularly through the finer capillaries. It contributes not only to convey medicines into the body, but also to their advantages when introduced. This remedy is best used when the primae viae are most empty, and the chylopoietic organs too languid, and should in that case be steadily applied over the whole abdomen. Gentle friction with oily substances relaxes; but strong friction with rough dry cloths is a powerful tonic. It has been considered particularly useful in ascites, and many other cases where the action of the absorbent system is to be promoted. When the brush is employed, the vessels are only slightly stimulated; but the most effectual means of applying it is by rough cloths, flannels, or woollen gloves. As much pressure should be used as the parts can bear without pain, and it is often advantageous that the patient should be also the operator.