Sequin, n. [F. sequin, It. zecchino, from zecca the mint, fr. Ar. sekkah, sikkah, a die, a stamp. Cf. Zechin.].
An old gold coin of Italy and Turkey. It was first struck at Venice about the end of the 13th century, and afterward in the other Italian cities, and by the Levant trade was introduced into Turkey. It is worth about 9s. 3d. sterling, or about $2.25. The different kinds vary somewhat in value. [1913 Webster]