Definition of "nunhood"

"She's Jewish," Harry muttered. "Nunhood is out of the question."

2005, Judith Arnold, The Fixer Upper, Mira, page 337

She entered the nunhood after her husband's death and became a well-respected tutor of high-ranking noblemen and noblewomen.

2007, William E. Deal, Handbook to Life in Medieval and Early Modern Japan, Oxford University Press, page 43