Sentence:  At St. Regis' Amory stayed three days and took his exams with a scoffing confidence, then doubling back to New York to pay his <WSD>tutelary</WSD> visit. ... [Monsignor Darcy] and Amory took to each other at first sight—the jovial, impressive prelate who could dazzle an embassy ball, and the green-eyed, intent youth, in his first long trousers, accepted in their own minds a relation of father and son within a half-hour's conversation. 
Meaning of the word marked with <WSD> tags:  Of or pertaining to a guardian.