Lewis & Short

gymnŏsŏphistae, ārum, m., = γυμνοσοφισταί (naked philosophers), Indian ascetics, gymnosophists, a sect of hermits who disregarded the decencies of life, Plin. 7, 2, 2, § 22; App. Flor. p. 351; Prud. Ham. 404 al.; cf. Cic. Tusc. 5, 27, 77; Val. Max. 3, 3 ext. 6.