Yes, thebes is a Scrabble word!

Noun

1. An ancient Egyptian city on the Nile River that flourished from the 22nd century BC to the 18th century BC; today the archeological remains include many splendid temples and tombs

2. An ancient Greek city in Boeotia destroyed by Alexander the Great in 336 BC

3. 100 thebe equal 1 pula in Botswana