νεφρ-ός, ὁ,
in plural, kidneys, [[ 5th c.BC: Diogenes Apolloniates Philosophus 6, 5th c.BC: Hippocrates Medicus “ἀφορισμοί” 4.78, 5th-6th c.BC: Plato Philosophus “Timaeus” 91a, etc.: in dual, 5th-6th c.BC: Aristophanes Comicus “Ranae” 475 ] Refs 5th c.BC+]: rarely in singular, [[ [prev. author] “Lys.” 962, 3rd c.BC: Euphro Comicus 1.25: euphemistic for ὄρχεις, 4th-3rd c.BC: Philippides Comicus 5.4: _metaphorically_, LXX.Psa.15(16).7 ] LXX+4th c.BC+]. (Cf. OHG. nioro 'kidney', Praenest. nefrones, Lanuv. nebrundines 'kidneys', 'testicles'.)