From 𐭰𐭲 (ct, “hundred”, numeral) + 𐫙𐫘𐫤𐫇𐫗 (ʿstwn, “column, pillar”, noun), "(city of) a hundred pillars".
𐭮𐭲𐭮𐭲𐭥𐭭𐭩 • (ststʿny /sadestun/)
