(Νείλευς), a Greek physician, whose name is sometimes written Nilus (Νεῖλος) and Neleus (Νήλευς), though Νείλευς is probably the most correct form of the word, as it is the most common. He must have lived some time in or before the third century B. C., as he is mentioned by Heracleides of Tarentum (ap. Galen. Comment. in Hippocr. " De Artic." 4.40, vol. xviii. pt. i. p. 736). He is quoted by Celsus (5.18.9, 6.6. §§ 8, 11, 8.20. pp. 86, 120, 121, 185), Caelius Aurelianus (De Morb. Acut. 2.29, p. 142), Galen (De Compos. Medicam. sec. Loc. 2.2, 4.8, 8.5, 9.2, vol. xii. pp. 568, 569, 765, 766, 806, vol. xiii. pp. 181, 182, 239, De Antid. 2.10, vol. xiv. p. 165), Alexander Trallianus (8.12. p. 268), Oribasius (Synops. iii. p. 50; and Coll. Medic. in Mai's Class. Auct. e Codic. Vatic. Edit. vol. iv. pp. 123, 130, 131, 153, 155), Aetius (1.4, 10, 2.3, 21, 24, 108, 2.4, 2, 3.1, 16, 17, pp. 166, 307, 308, 353, 365, 454, 455), and Paulus Aegineta (3.22, 37, 46, 49, 7.16, 18, pp. 432, 458, 470, 473, 672, 684), and was celebrated for the invention of a machine for the reduction of dislocations, called πλινθίον, of which a description is given by Oribasius (De Machinam. 100.8. p. 167.)