ges·so /ˈʤɛ(ˌ)so/
  石膏,石膏粉
  Ges·so n.
  1. Plaster of Paris, or gypsum, esp. as prepared for use in painting, or in making bas-reliefs and the like; by extension, a plasterlike or pasty material spread upon a surface to fit it for painting or gilding, or a surface so prepared.
  2.  A work of art done in gesso. [Obs.]
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