The Collaborative International Dictionary of English v.0.48:
Gymnosophy \Gym*nos"o*phy\ (j[i^]m*n[o^]s"[-o]*f[y^]), n. The doctrines of the Gymnosophists. --Good. [1913 Webster]WordNet (r) 3.0 (2006):
gymnosophy n 1: the doctrine of a sect of Hindu philosophers who practiced nudity and asceticism and meditation