A Zuz (plural, Zuzzim) is an ancient silver coin minted by the Jews during the Bar-Kochba Revolt, overstruck over Roman Imperial or Provincial denarii.
There are many thoughts on where the name "zuz" comes from. One thought is that it is a takeoff of the name of the Greek god Zeus, because of the Jewish prohibition against pronouncing Idols. Another thought is that in Hebrew, zuz means "move" (LaZuz = to move) and zuzzim means, moving. This is thought to be because a Jew should constantly be giving money as Tzedakkah (roughly translated as charity, but could also mean helping the poor etc. Tzedakkah comes from the word "Righteous," Heb. 'Tzaddik.')
4 Zuzim = 4 Drachma = 4 Denarii = 1 Shekel = 1 Tetradrachm = 1 Bar-Kochba Sela
In the Passover (Heb. Pesah) seder, it is customary to end it by singing Had-Gad-Ya, the Aramaic song meaning Lit. "One Little Goat". In the first line it says "Dizabin Abba bitrei Zuzei", translated as "That Father bought for two Zuzzim" (1/2 shekel, see "prices", above).
See also