Definition of "urning"

The urning loves and deifies the male object of his affections, just as a man idealizes the woman he loves.

1886, Richard von Krafft-Ebing, Psychopathia Sexualis, F. A. Davis Co, published 1894, page 255

My aim in life will be to create tolerance among mankind and especially to vindicate the decent, spiritual Urning

1940, Bob Mizer, diary entry quoted in Buying Gay: How Physique Entrepreneurs Sparked a Movement (2019), page 48