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The answer to the crossword question “Monastery head’s jurisdiction” is ABBACY. An abbacy refers to the jurisdiction or authority of an abbot or abbess, who is the head of an abbey or monastery. This term is commonly used in the context of the Catholic Church and other religious orders. The abbacy is responsible for overseeing the spiritual and administrative affairs of the monastery, including the management of its property, finances, and personnel. Overall, the abbacy plays a crucial role in maintaining the order and discipline of the monastic community.