It is an inflection of zumacar. It means treating or tanning skins with sumac or I zumaque. The zumaque is a tree that has tannins that is used in the tanneries. Its scientific name is Rhus coriaria and belongs to the Anacardiaceae family. Also receives the names of sumac, rhus. It can also mean to add zumac to the meals, season with zumac (Turkish spice). Marinate.