D defs.my
Entry 2 senses Webster, 1913

Gesso

· Ges·so · IPA /ˈd͡ʒɛsəʊ/
01 n. 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 pa…
  1. 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. 2.
    A work of art done in gesso.[Obs.]