The crossword solution for the term 'Castle of the Ballroom' is Irene, which is a 5-letter word. Irene is a female given name derived from the Greek Εἰρήνη (Eirēnē), meaning 'PEACE'. It is also the name of the Greek goddess of PEACE. In English, it is often associated with the Latin word 'IRENIC', meaning 'PEACEFUL'. The term 'Castle of the Ballroom' is often used to refer to a grand and luxurious ballroom, usually located in a castle or palace.