The Collaborative International Dictionary of English v.0.48:

Musical \Mu"sic*al\, a. [Cf. F. musical.]
   Of or pertaining to music; having the qualities of music; or
   the power of producing music; devoted to music; melodious;
   harmonious; as, musical proportion; a musical voice; musical
   instruments; a musical sentence; musical persons.
   [1913 Webster]

   Musical box, or Music box, a box or case containing
      apparatus moved by clockwork so as to play certain tunes
      automatically. The apparatus may be driven by a wind-up
      spring mechanism or by batteries.

   Musical fish (Zool.), any fish which utters sounds under
      water, as the drumfish, grunt, gizzard shad, etc.

   Musical glasses, glass goblets or bowls so tuned and
      arranged that when struck, or rubbed, they produce musical
      notes. Cf. Harmonica, 1.
      [1913 Webster]

WordNet (r) 3.0 (2006):

musical box
    n 1: produces music by means of pins on a revolving cylinder
         that strike the tuned teeth of a comb-like metal plate
         [syn: music box, musical box]