The word is generally accepted to mean a combination of function and sparkle, hence, farkle. Motorcycle enthusiasts may install accessories, called farkles (also spelled farkel), to customize their machine. One source attributes the term to Pete Wells, the organizer of a 1997 Honda ST1100 rally.
Instability is the quality of not being stable, balanced, or predictable. If you've ever walked out onto a diving board, you've probably noticed its instability â meaning the board bends and bounces as you move. Instability comes from the Middle French word instabilite, meaning unsteadiness.. Instability can refer to objects that are not stable, but it can also describe unpredictable situations or relationships. For example, you might hear people talk about economic instability.
Knee instability, also called giving way, refers to knee subluxation, or abnormal opening, during certain activities. Typically, this instability is related to a chronic or acute injury of ligaments called the anterior cruciate ligament and medial collateral ligament. Ligament tears that may cause instability in the knee may be caused by twisting or turning in such a manner as to initiate a tear in the anterior cruciate ligament. Many people assume when they experience a knee giving way that they are experiencing true knee instability. Most often, this is not the case.