grisaillePronunciation: /grɪˈzʌɪ(l), -zeɪl/Definition of grisaille noun [mass noun] Art a method of painting in grey monochrome, typically to imitate sculpture: trompe l’oeil elevations painted in grisaille [count noun] a grisaille painting or stained-glass window: fine grisailles by Hans Holbein the ElderOrigin: mid 19th century: French, from gris 'grey'grisaille in other Oxford dictionaries Definition of grisaille in the US English dictionary