Retreating reed

Retreating reed (Ger.: ausschlagende Zunge), 1. reed that is closed when at rest, such as that of the Moroccan lira, or a slit in a piece of stopped cane, unlike the beating reed, which is open when at rest; 2. organ reed introduced by Robert Hope-Jones (d. 1914); it lies on its frame when at rest (89 Galpin). Grove's Dictionary of Music and Musicians, 5th edition. London, 1954.