The Collaborative International Dictionary of English v.0.48:

Centesimo \Cen*tes"i*mo\ (s[e^]n"t[e^]s"[i^]*m[-o]), n.; pl.
   -mi (s[e^]n"t[e^]s"[i^]*m[=e]). [It. & Sp.]
   A copper coin of Italy and Spain equivalent to a centime.
   [1913 Webster]

WordNet (r) 3.0 (2006):

centesimo
    n 1: a fractional monetary unit of several countries: Panama and
         Italy and Uruguay and Chile