These pages comprise a dictionary of terms relating to the pipe organ. Please keep definitions to a few sentences, and do not include pictures or sound clips. When more space is needed for a term, a new page can be created for it. Waldflöte [noun] - a broad-scale metal flue stop, usually open but with a tapered cap. German for "Forest Flute". Usually voiced with a bright tone, having some stringy quality. Wedge [noun] a component of a reed pipe which holds the tongue and shallot in the block; usually a tapered piece of hardwood. Wedge Bellows Well Werck Willis, Henry Wind Pressure Wind Stabilizer