Source : Webster's Revised Unabridged Dictionary (1913)

Dacapo \Da`ca"po\ [It., from [the] head or beginning.] (Mus.)
   From the beginning; a direction to return to, and end with,
   the first strain; -- indicated by the letters D. C. Also, the
   strain so repeated.

Source : Free On-Line Dictionary of Computing

DACAPO
     
        Broad-range hardware specification language.  "Mixed Level
        Modelling and Simulation of VLSI Systems", F.J. Rammig in
        Logic Design and Simulation, E. Horbst ed, N-H 1986.