The Collaborative International Dictionary of English v.0.48:

Discobolus \Dis*cob"o*lus\, n.; pl. Discoboli. [L., fr. Gr. ?;
   ? a discu + ? to throw.] (Fine Arts)
   (a) A thrower of the discus.
   (b) A statue of an athlete holding the discus, or about to
       throw it.
       [1913 Webster]

   Note: The Discobolus of Myron was a famous statue of
         antiquity, and several copies or imitations of it have
         been preserved.
         [1913 Webster]