ðə kˈæsəlz ˈɜːlɪɚ nˈeɪmz, ɹˈeɪnbɜːɡ, ænd ˈɔːlsoʊ ɹˈoʊnbɜːɡ, lˈaɪkli dᵻɹˈaɪv fɹʌmðɪ ˈoʊld hˈaɪ dʒˈɜːmən wˈɜːd "ɹˈoʊn," wˌɪtʃ mˈiːnz ɐ fˈɔːlən tɹˈiː.
The castle's earlier names, Raneburg, and also Roneburg, likely derive from the old High German word "Rone," which means a fallen tree.