The pennywhistle is also known as the tin whistle, Irish whistle, feadóg stáin, or just simply whistle. The term "tin whistle" is popular in the United States while the term "pennywhistle" is widely used in the United Kingdom. The Irish name, feadóg stáin, translates to "tin whistle." The instrument is also referred to as the English flageolet or French flageolet due to its similar design to the flageolet flute. Other synonyms for the pennywhistle include the high whistle, low whistle, and soprano whistle, which differ in pitch and range. Regardless of the name, the pennywhistle remains a beloved and versatile instrument in traditional Irish and Celtic music.