The Collaborative International Dictionary of English v.0.48:

Stucco \Stuc"co\, n.; pl. Stuccoes, Stuccos. [It., fr. OHG.
   stucchi a crust, piece, G. st["u]ck piece; akin to AS.
   stycce. See Stock.]
   1. Plaster of any kind used as a coating for walls,
      especially, a fine plaster, composed of lime or gypsum
      with sand and pounded marble, used for internal
      decorations and fine work.
      [1913 Webster]

   2. Work made of stucco; stuccowork.
      [1913 Webster]