za'atar /ˈzɑːtɑː 
/ (also zaatar) ▸ noun [mass noun] a Middle Eastern condiment made from a mixture of thyme, dried sumac, and other ingredients: toast the za'atar and cumin seeds in a small skillet until their aroma becomes pronounced.
– ORIGIN Arabic sa‘tar, za‘tar ‘wild thyme’.
EnglishOxford Dictionary of English
