Source : Webster's Revised Unabridged Dictionary (1913)

Centesimo \Cen*tes"i*mo\, n.; pl. {-mi}. [It. & Sp.]
   A copper coin of Italy and Spain equivalent to a centime.

Source : WordNet®

centesimo
     n : a fractional monetary unit of several countries: Panama and
         Italy and Uruguay and Chile
     [also: {centesimi} (pl)]