What is "zellige"

n. A form of terracotta tilework covered with enamel in the form of chips set into plaster, characteristic of Moroccan architecture.

Zellige, zillij or zellij is terra cotta tilework covered with enamel in the form of chips set into plaster. This form of Islamic art is one of the main characteristics of Moroccan architecture. It consists of geometrically patterned mosaics, used to ornament walls, ceilings, fountains, floors, pools and tables.