The letter "š" is a character used in several languages, including Czech, Slovak, Slovenian, and Croatian. It represents a voiceless postalveolar fricative sound, similar to the English "sh" in "shoe." The letter is formed by adding a caron (ˇ) over the letter "s," distinguishing it from the regular "s." In the Unicode system, "š" is assigned the code point U+0161. This character is important in the orthography of languages that use it, as it can change the meaning of words. For example, in Czech, "s" and "š" are considered different letters, each with its own pronunciation and usage.