The symbol "ł" (lowercase) or "Ł" (uppercase) is a letter used in the Polish alphabet, as well as in some Native American languages like Navajo. It is called "L with stroke" or "L with a bar through it." In Polish, the letter is pronounced as a "w" sound, similar to the English word "will." It is important to note that this letter is not an interchangeable variant of the regular letter "L" but represents a distinct sound in the languages that use it.