Chiaroscuro
CHIAROSCURO (from the Ital. chiaro, light or brightness, and oscuro, darkness or shade), the disposition of light and shade in a painting; the term is applied to an early method of printing wood-engravings from several blocks, and also to a picture in black and white, or brown and white only.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)