The Collaborative International Dictionary of English v.0.48:

Saxophone \Sax"o*phone\, n. [A.A.J. Sax, the inventor (see
   Saxhorn) + Gr. ? tone.] (Mus.)
   A wind instrument of brass, containing a reed, and partaking
   of the qualities both of a brass instrument and of a
   clarinet.
   [1913 Webster]

WordNet (r) 3.0 (2006):

saxophone
    n 1: a single-reed woodwind with a conical bore [syn: sax,
         saxophone]