Quick answer
Xerxes is a boy name meaning "ruler over heroes".
Pronunciation: American English /ˈzɜɹk.siz/; British English /ˈzɜːk.siːz/.
Meaning and history
Greek form of the Old Persian name 𐎧𐏁𐎹𐎠𐎼𐏁𐎠 (Xšayarša), which meant "ruler over heroes". This was the name of a 5th-century BC king of Persia, the son of Darius the Great. He attempted an invasion of Greece, which ended unsuccessfully at the battle of Salamis.
Notes and context
Usage: old persian, history | Old Persian: 𐎧𐏁𐎹𐎠𐎼𐏁𐎠; Ancient Greek: Ξέρξης