The term 'cloistered one' refers to a MONK or a NUN, both of which are religious figures who have taken a vow of seclusion from the outside world. A MONK is a male religious figure who has taken a vow of poverty, chastity, and obedience, while a NUN is a female religious figure who has taken a similar vow. Both monks and nuns typically live in a monastery or convent, where they devote their lives to prayer and service.