saraṇyū́ (ū́), f. N. of a daughter of Tvaṣṭṛ (in [RV.] represented as the wife of Vivasvat and mother of the two Aśvins, and accord. to some, of the twins Yama and Yamī, whom she brought forth in the form of a mare; accord. to some also N. of the Dawn), [RV. x, 17, 2]; cf. [Naigh. v, 6]; [Nir. xii, 9.]