An outdated designation formerly used for the art of certain people considered to be outside the spheres of influence of other, politically dominant cultural groups; was used especially concerning communities in sub-Saharan Africa, the Pacific Islands, and native tribal groups throughout the Americas. Use instead "indigenous art," "tribal art," or the most specific name known for the culture of origin. Distinct from "primitivism," a term sometimes used for artistic styles or movements intended, often romantically or sentimentally, to emulate the appearance of art made by people operating outside of mainstream art markets.

Source: Art & Architecture Thesaurus

http://vocab.getty.edu/page/aat/300056500