The letter "ö" is a vowel used in several languages, including German, Hungarian, and Swedish. It represents a sound that is similar to the English "e" in "her," but with rounded lips. In German, "ö" can appear in words like "schön" (beautiful) and "mögen" (to like). In Hungarian, "ö" is pronounced similarly but can have different meanings depending on the context. It is an important part of the alphabet and helps distinguish between words that would otherwise be spelled the same. The letter "ö" is also used in Turkish and Finnish, showcasing its versatility across languages.