Save Gender Masculine Usage Literature, Popular Culture Pronounced Pron. e-ROO [key] Meaning & History Means "the one" or "he that is alone" in Quenya. Eru Ilúvatar is the supreme being, God, and creator of all in J.R.R. Tolkien's Middle-earth legendarium. Eru (이루) is also the stage name of Korean-American K-Pop singer-songwriter Jo Sung Hyun.
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