What does "sautillé" describe in bowing technique?

The term "sautillé" specifically refers to a bowing technique that involves a bouncing motion of the bow on the string, allowing for quick, light strokes that produce a rapid, articulated sound. This technique is characterized by its proximity to the string and is often used to create a lively, agile effect in musical passages. The bow is controlled in such a way that it alternates between contacting the string and bouncing off it, resulting in a series of rapid notes that retain clarity and precision. Understanding this technique is crucial for string players as it enhances their ability to execute fast passages with agility and articulation, contributing to the overall expressiveness of their performance.