The term 'Abbey Title' refers to the titles given to members of a religious order, such as a monastery or convent. The two crossword solutions for this term are DOM, which stands for 'Dominus, ' a Latin word meaning 'LORD, ' and FRA, which stands for 'frater, ' a Latin word meaning 'BROTHER.' These titles were used to refer to the leaders of religious orders, with DOM being used for the head of a monastery and FRA being used for the head of a convent.