Correct spelling for the English word "Rined" is [ɹˈa͡ɪnd], [ɹˈaɪnd], [ɹ_ˈaɪ_n_d] (IPA phonetic alphabet).
There is no word "Rined" in the English language, so it does not have an etymology. It is possible that you are referring to a misspelling or a less common word. However, if you meant to ask about the etymology of the word "rind", it comes from the Old English word "rind", meaning bark or crust.