The letter "Kaf" is the eleventh letter of the Arabic alphabet. It is represented by the symbol ك in its isolated form and has a sound similar to the English "k." In Arabic script, Kaf can take different forms depending on its position in a word: initial, medial, or final. In addition to its use in the Arabic language, Kaf is also found in other Semitic languages, such as Hebrew, where it is represented by the letter כ (Kaf). The letter has cultural significance and is often used in various contexts, including literature and calligraphy.