Source : Webster's Revised Unabridged Dictionary (1913)

Manichord \Man"i*chord\, Manichordon \Man`i*chor"don\, [L.
   monochordon, Gr. ?; -- so called because it orig. had only
   one string. See {Monochord}.] (Mus.)
   The clavichord or clarichord; -- called also {dumb spinet}.