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Rama from WikiPedia:

R?má in the Rigveda and the Atharvaveda is an adjective meaning "dark, black", or a noun meaning "darkness", e.g. RV 10.3.3 (trans. Griffith):

As a personal name it appears in RV 10.93.14:

The feminine form of the adjective, r?m?? is an epitheton of the night (Ratri), as is k?????, the feminine of k???a, viz. "the dark one; the black one". Mayrhofer (1996) suggests a derivation from PIE (H)reh1-mo-, cognate to OHG r?mac "dirty".

Two Ramas are mentioned in the Vedas, with the patronymics M?rgaveya and Aupatasvini; another Rama with the patronymic J?madagnya is the supposed author of a Rigvedic hymn. According to Monier-Williams, three Ramas were celebrated in post-Vedic times,

In the Vishnu sahasranama, Rama is the 394th name of Vishnu. In the interpretation of Adi Sankara's commentary, translated by Swami Tapasyananda of the Ramakrishna Mission, Rama has two meanings: the supreme Brahman who is the eternally blissful spiritual Self in whom yogis delight, or the One (i.e., Vishnu) who out of his own will assumed the enchanting form of Rama, the son of Dasaratha.

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