Wear phenomena taking place between two surfaces having oscillatory relative motion of small amplitude.

Uneven wear patterns found on bearing races due to cycles of sliding or skidding by the rolling elements. Generally, the relative motion which creates fretting is very small amplitude. Fretting often gives rise to corrosion within the bearing, caused by the fine wear debris.

partial part of the fermentation process of red wine making when grape must come into contact with skin of grinded berries 

(n) agitation resulting from active worry(n) a spot that has been worn away by abrasion or erosion(n) an ornamental pattern consisting of repeated vertical and horizontal lines (often in relief)(n) a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of t [..]

Surface damage caused by very small relative movement between two surfaces usually under heavy load.

Placing a finger next to a fret.

A form of attritive wear resulting from small-amplitude oscillations or vibrations that cause the removal of very finely divided particles from rubbing surfaces (e.g., the vibrations imposed on the wheel bearing of an automobile when transported by rail car). With ferrous metals the wear particles oxidize to a reddish, abrasive iron oxide, which ha [..]

Metal deterioration caused by repetitive slip at the interface between two surfaces.

lang=en 1800s=1818 * '''1818''' — . ''''. *: Perpetual fretting at length threw Madame Moritz into a decline, which at first increased her irritability, but she is now at peace for ever.