zaatar UK /ˈzɑːtɑː/US /ˈzɑtɑɹ/ noun2 •A particular herb, similar in flavor to thyme or oregano, used in Middle Eastern cuisine (Origanum syriacum). •A Middle Eastern seasoning, having this herb or a mixture of herbs as the main ingredient, with sumac (or other tart-flavored equivalent) and sesame seeds.