Secret (m)
(with) definite article: leSynonym in Sachs, who doesn’t mention it, however, in his paragraph "Windkasten"; Not encountered as such in other sources; ➺ Spanish Secreto.
Sachs, Curt: Real-Lexikon der Musikinstrumente: zugleich ein Polyglossar für das gesamte Instrumentengebiet [Berlin, 1913]. Hildesheim, 1964 [facsimile].