Gnawa

Originates from the Amazigh word agnaw / agnaou, used for a person who cant speak well. The orgin of the word come from the linking of the words Ag meaning "origin/essence", N meaning "of" and U, W meaning "inherit/take over (used for geneological orgin)", the word litterly means one who is from a certain origin, specialy used for foreigner/stranger. The prefix Ag is also used in Amazigh tribal names and group self designations. For example the Guanches population which was a ancient population on the Island Tenerife used to call themself Agn-Chinnet (Agn like in Agnaw, Chinnet was the name of the island in their language) from which the spaniards took the name Guanches. Its als used in Imuhagh/Tuareg family names like for example Ag-cherif and Ag-bahanga.

来源：wiktionary