[German : turnen, to do gymnastics; see TURNER² + Verein, club (from obsolete vereine, back-formation from Middle High German vereinen, to unite : ver-, intensive pref. from Old High German far-; see per¹ in the Appendix of Indo-European roots + einen, to make one, from ein, one, from Old High German; see oi-no- in the Appendix of Indo-European roots).]