From Spanish adobe, from Arabic اَلطُّوب (aṭ-ṭūb), from Sahidic Coptic ⲧⲱⲃⲉ (tōbe, “brick”), from Demotic Egyptian ⁠⁠ (tb, “brick”), from Egyptian Db-b-t:O39 (ḏbt, “brick, block, ingot”).